diff --git a/src/main/java/com/github/wellch4n/oops/data/ApplicationPerformanceConfig.java b/src/main/java/com/github/wellch4n/oops/data/ApplicationPerformanceConfig.java
index c3e510f0..830bd866 100644
--- a/src/main/java/com/github/wellch4n/oops/data/ApplicationPerformanceConfig.java
+++ b/src/main/java/com/github/wellch4n/oops/data/ApplicationPerformanceConfig.java
@@ -37,6 +37,17 @@ public static class EnvironmentConfig {
         private String memoryLimit;
 
         private Integer replicas;
+
+        private AutoscalingConfig autoscaling;
+    }
+
+    @Data
+    public static class AutoscalingConfig {
+        private Boolean enabled;
+        private Integer minReplicas;
+        private Integer maxReplicas;
+        private Integer targetCpuUtilization;
+        private Integer targetMemoryUtilization;
     }
 
     @Converter
diff --git a/src/main/java/com/github/wellch4n/oops/task/ArtifactDeployTask.java b/src/main/java/com/github/wellch4n/oops/task/ArtifactDeployTask.java
index 00e23508..36abb27c 100644
--- a/src/main/java/com/github/wellch4n/oops/task/ArtifactDeployTask.java
+++ b/src/main/java/com/github/wellch4n/oops/task/ArtifactDeployTask.java
@@ -8,10 +8,13 @@
 import io.fabric8.kubernetes.api.model.*;
 import io.fabric8.kubernetes.api.model.apps.StatefulSet;
 import io.fabric8.kubernetes.api.model.apps.StatefulSetBuilder;
+import io.fabric8.kubernetes.api.model.autoscaling.v2.HorizontalPodAutoscaler;
+import io.fabric8.kubernetes.api.model.autoscaling.v2.HorizontalPodAutoscalerBuilder;
 import io.fabric8.kubernetes.client.KubernetesClient;
 import io.fabric8.kubernetes.client.dsl.base.CustomResourceDefinitionContext;
 import io.fabric8.kubernetes.client.dsl.base.PatchContext;
 import io.fabric8.kubernetes.client.dsl.base.PatchType;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Callable;
@@ -70,10 +73,9 @@ public Boolean call() {
         checkNamespace();
         checkImagePullSecret();
 
-        StatefulSet statefulSet = new StatefulSetBuilder()
+        StatefulSetBuilder ssBuilder = new StatefulSetBuilder()
                 .withNewMetadata().withName(applicationName).withLabels(labels).endMetadata()
                 .withNewSpec()
-                    .withReplicas(perfEnvConfig.getReplicas() == null ? 0 : perfEnvConfig.getReplicas())
                     .withServiceName(applicationName)
                     .withNewSelector().withMatchLabels(labels).endSelector()
                     .withNewTemplate()
@@ -94,17 +96,103 @@ public Boolean call() {
                             .addNewImagePullSecret("dockerhub")
                         .endSpec()
                     .endTemplate()
-                .endSpec()
-                .build();
+                .endSpec();
 
+        if (!isAutoscalingEnabled()) {
+            ssBuilder.editSpec()
+                    .withReplicas(perfEnvConfig.getReplicas() == null ? 0 : perfEnvConfig.getReplicas())
+                    .endSpec();
+        }
+
+        StatefulSet statefulSet = ssBuilder.build();
         client.apps().statefulSets().inNamespace(namespace).resource(statefulSet).patch(patchContext);
 
+        checkHpa();
         checkService();
         checkIngressRoute();
 
         return true;
     }
 
+    private boolean isAutoscalingEnabled() {
+        var cfg = perfEnvConfig.getAutoscaling();
+        return cfg != null && Boolean.TRUE.equals(cfg.getEnabled());
+    }
+
+    private void checkHpa() {
+        String namespace = application.getNamespace();
+        String applicationName = application.getName();
+
+        var hpaClient = client.autoscaling().v2()
+                .horizontalPodAutoscalers()
+                .inNamespace(namespace);
+
+        if (!isAutoscalingEnabled()) {
+            try {
+                hpaClient.withName(applicationName).delete();
+            } catch (Exception e) {
+                log.warn("Failed to delete HPA for {}/{}: {}", namespace, applicationName, e.getMessage());
+            }
+            return;
+        }
+
+        var cfg = perfEnvConfig.getAutoscaling();
+        int minReplicas = cfg.getMinReplicas() == null ? 1 : cfg.getMinReplicas();
+        int maxReplicas = cfg.getMaxReplicas() == null ? Math.max(minReplicas, 10) : cfg.getMaxReplicas();
+        if (maxReplicas < minReplicas) {
+            maxReplicas = minReplicas;
+        }
+
+        List<io.fabric8.kubernetes.api.model.autoscaling.v2.MetricSpec> metrics = new ArrayList<>();
+        if (cfg.getTargetCpuUtilization() != null) {
+            metrics.add(buildResourceMetric("cpu", cfg.getTargetCpuUtilization()));
+        }
+        if (cfg.getTargetMemoryUtilization() != null) {
+            metrics.add(buildResourceMetric("memory", cfg.getTargetMemoryUtilization()));
+        }
+        if (metrics.isEmpty()) {
+            metrics.add(buildResourceMetric("cpu", 70));
+        }
+
+        HorizontalPodAutoscaler hpa = new HorizontalPodAutoscalerBuilder()
+                .withNewMetadata()
+                    .withName(applicationName)
+                    .withNamespace(namespace)
+                    .withLabels(labels)
+                .endMetadata()
+                .withNewSpec()
+                    .withMinReplicas(minReplicas)
+                    .withMaxReplicas(maxReplicas)
+                    .withNewScaleTargetRef()
+                        .withApiVersion("apps/v1")
+                        .withKind("StatefulSet")
+                        .withName(applicationName)
+                    .endScaleTargetRef()
+                    .withMetrics(metrics)
+                .endSpec()
+                .build();
+
+        try {
+            hpaClient.resource(hpa).patch(patchContext);
+        } catch (Exception e) {
+            log.error("Failed to apply HPA for {}/{}:", namespace, applicationName, e);
+            throw e;
+        }
+    }
+
+    private io.fabric8.kubernetes.api.model.autoscaling.v2.MetricSpec buildResourceMetric(String name, int utilization) {
+        return new io.fabric8.kubernetes.api.model.autoscaling.v2.MetricSpecBuilder()
+                .withType("Resource")
+                .withNewResource()
+                    .withName(name)
+                    .withNewTarget()
+                        .withType("Utilization")
+                        .withAverageUtilization(utilization)
+                    .endTarget()
+                .endResource()
+                .build();
+    }
+
     private void checkNamespace() {
         client.namespaces()
                 .resource(new NamespaceBuilder().withNewMetadata().withName(application.getNamespace()).endMetadata().build())
diff --git a/web/app/apps/components/application-performance-info.tsx b/web/app/apps/components/application-performance-info.tsx
index 055c32b9..571ea66b 100644
--- a/web/app/apps/components/application-performance-info.tsx
+++ b/web/app/apps/components/application-performance-info.tsx
@@ -11,13 +11,14 @@ import {
 } from "@/components/ui/form"
 import { Input } from "@/components/ui/input"
 import { Button } from "@/components/ui/button"
+import { Checkbox } from "@/components/ui/checkbox"
 import { useForm, useFieldArray, useFormContext } from "react-hook-form"
 import { zodResolver } from "@hookform/resolvers/zod"
 import { ApplicationPerformanceEnvFormValues, applicationPerformanceEnvSchema } from "../schema"
 import { TabsContent } from "@/components/ui/tabs"
 import { ApplicationPerformanceConfigEnvironmentConfig, ApplicationEnvironment } from "@/lib/api/types"
 import { updateApplicationPerformanceEnvConfigs } from "@/lib/api/applications"
-import { Cpu, MemoryStick, Copy } from "lucide-react"
+import { Cpu, MemoryStick, Copy, Gauge } from "lucide-react"
 import { toast } from "sonner"
 import { ApplicationEnvironmentSelector } from "./application-environment-selector"
 import { Skeleton } from "@/components/ui/skeleton"
@@ -197,24 +198,27 @@ function ReplicasInput({ value, onChange }: { value: number | undefined, onChang
 }
 
 function SingleEnvironmentConfig({ index }: SingleEnvironmentConfigProps) {
-  const { control } = useFormContext<ApplicationPerformanceEnvFormValues>()
+  const { control, watch } = useFormContext<ApplicationPerformanceEnvFormValues>()
   const { t } = useLanguage()
+  const autoscalingEnabled = watch(`environmentConfigs.${index}.autoscaling.enabled`) === true
 
   return (
     <div className="flex flex-col gap-4">
-      <FormField
-        control={control}
-        name={`environmentConfigs.${index}.replicas`}
-        render={({ field }) => (
-          <FormItem>
-            <FormLabel className="flex items-center gap-1"><Copy className="h-3.5 w-3.5" />{t("apps.perf.replicas")}</FormLabel>
-            <FormControl>
-              <ReplicasInput value={field.value} onChange={field.onChange} />
-            </FormControl>
-            <FormMessage />
-          </FormItem>
-        )}
-      />
+      {!autoscalingEnabled && (
+        <FormField
+          control={control}
+          name={`environmentConfigs.${index}.replicas`}
+          render={({ field }) => (
+            <FormItem>
+              <FormLabel className="flex items-center gap-1"><Copy className="h-3.5 w-3.5" />{t("apps.perf.replicas")}</FormLabel>
+              <FormControl>
+                <ReplicasInput value={field.value} onChange={field.onChange} />
+              </FormControl>
+              <FormMessage />
+            </FormItem>
+          )}
+        />
+      )}
       <div className="grid grid-cols-2 gap-x-4 gap-y-4 w-fit">
         <FormField
           control={control}
@@ -281,6 +285,117 @@ function SingleEnvironmentConfig({ index }: SingleEnvironmentConfigProps) {
           )}
         />
       </div>
+      <div className="border-t pt-4 flex flex-col gap-3">
+        <FormField
+          control={control}
+          name={`environmentConfigs.${index}.autoscaling.enabled`}
+          render={({ field }) => (
+            <FormItem className="flex items-center gap-2 space-y-0">
+              <FormControl>
+                <Checkbox checked={field.value === true} onCheckedChange={(v) => field.onChange(v === true)} />
+              </FormControl>
+              <FormLabel className="flex items-center gap-1 !mt-0 cursor-pointer">
+                <Gauge className="h-3.5 w-3.5" />{t("apps.perf.autoscaling")}
+              </FormLabel>
+            </FormItem>
+          )}
+        />
+        {autoscalingEnabled && (
+          <>
+            <p className="text-xs text-muted-foreground">{t("apps.perf.autoscalingHint")}</p>
+            <div className="grid grid-cols-2 gap-x-4 gap-y-4 w-fit">
+              <FormField
+                control={control}
+                name={`environmentConfigs.${index}.autoscaling.minReplicas`}
+                render={({ field }) => (
+                  <FormItem>
+                    <FormLabel className="flex items-center gap-1"><Copy className="h-3.5 w-3.5" />{t("apps.perf.minReplicas")}</FormLabel>
+                    <FormControl>
+                      <Input
+                        type="number"
+                        min={1}
+                        placeholder="1"
+                        className="w-24"
+                        value={field.value ?? ""}
+                        onChange={e => field.onChange(e.target.value === "" ? undefined : parseInt(e.target.value, 10))}
+                      />
+                    </FormControl>
+                    <FormMessage />
+                  </FormItem>
+                )}
+              />
+              <FormField
+                control={control}
+                name={`environmentConfigs.${index}.autoscaling.maxReplicas`}
+                render={({ field }) => (
+                  <FormItem>
+                    <FormLabel className="flex items-center gap-1"><Copy className="h-3.5 w-3.5" />{t("apps.perf.maxReplicas")}</FormLabel>
+                    <FormControl>
+                      <Input
+                        type="number"
+                        min={1}
+                        placeholder="10"
+                        className="w-24"
+                        value={field.value ?? ""}
+                        onChange={e => field.onChange(e.target.value === "" ? undefined : parseInt(e.target.value, 10))}
+                      />
+                    </FormControl>
+                    <FormMessage />
+                  </FormItem>
+                )}
+              />
+              <FormField
+                control={control}
+                name={`environmentConfigs.${index}.autoscaling.targetCpuUtilization`}
+                render={({ field }) => (
+                  <FormItem>
+                    <FormLabel className="flex items-center gap-1"><Cpu className="h-3.5 w-3.5" />{t("apps.perf.targetCpu")}</FormLabel>
+                    <FormControl>
+                      <div className="relative w-24">
+                        <Input
+                          type="number"
+                          min={1}
+                          max={100}
+                          placeholder="70"
+                          className="pr-8"
+                          value={field.value ?? ""}
+                          onChange={e => field.onChange(e.target.value === "" ? undefined : parseInt(e.target.value, 10))}
+                        />
+                        <span className="pointer-events-none absolute right-3 top-1/2 -translate-y-1/2 text-xs text-muted-foreground">%</span>
+                      </div>
+                    </FormControl>
+                    <FormMessage />
+                  </FormItem>
+                )}
+              />
+              <FormField
+                control={control}
+                name={`environmentConfigs.${index}.autoscaling.targetMemoryUtilization`}
+                render={({ field }) => (
+                  <FormItem>
+                    <FormLabel className="flex items-center gap-1"><MemoryStick className="h-3.5 w-3.5" />{t("apps.perf.targetMemory")}</FormLabel>
+                    <FormControl>
+                      <div className="relative w-24">
+                        <Input
+                          type="number"
+                          min={1}
+                          max={100}
+                          placeholder="—"
+                          className="pr-8"
+                          value={field.value ?? ""}
+                          onChange={e => field.onChange(e.target.value === "" ? undefined : parseInt(e.target.value, 10))}
+                        />
+                        <span className="pointer-events-none absolute right-3 top-1/2 -translate-y-1/2 text-xs text-muted-foreground">%</span>
+                      </div>
+                    </FormControl>
+                    <FormMessage />
+                  </FormItem>
+                )}
+              />
+            </div>
+          </>
+        )}
+      </div>
     </div>
   )
 }
diff --git a/web/app/apps/schema.ts b/web/app/apps/schema.ts
index 038669cb..cb1d7ece 100644
--- a/web/app/apps/schema.ts
+++ b/web/app/apps/schema.ts
@@ -49,6 +49,13 @@ export const applicationPerformanceEnvSchema = z.object({
     cpuLimit: z.string().optional(),
     memoryRequest: z.string().optional(),
     memoryLimit: z.string().optional(),
+    autoscaling: z.object({
+      enabled: z.boolean().optional(),
+      minReplicas: z.number().int().min(1).optional(),
+      maxReplicas: z.number().int().min(1).optional(),
+      targetCpuUtilization: z.number().int().min(1).max(100).optional(),
+      targetMemoryUtilization: z.number().int().min(1).max(100).optional(),
+    }).optional(),
   })),
 })
 
diff --git a/web/lib/api/types.ts b/web/lib/api/types.ts
index 65a2add5..1e196ecc 100644
--- a/web/lib/api/types.ts
+++ b/web/lib/api/types.ts
@@ -107,6 +107,15 @@ export interface ApplicationPerformanceConfigEnvironmentConfig {
   cpuLimit?: string
   memoryRequest?: string
   memoryLimit?: string
+  autoscaling?: AutoscalingConfig
+}
+
+export interface AutoscalingConfig {
+  enabled?: boolean
+  minReplicas?: number
+  maxReplicas?: number
+  targetCpuUtilization?: number
+  targetMemoryUtilization?: number
 }
 
 export interface ApplicationPodStatus {
diff --git a/web/locales/en.ts b/web/locales/en.ts
index 9b463e27..518e576e 100644
--- a/web/locales/en.ts
+++ b/web/locales/en.ts
@@ -155,6 +155,12 @@ const en = {
   "apps.perf.saveSuccess": "Config saved",
   "apps.perf.saveError": "Save failed",
   "apps.perf.noAppInfo": "Please save app info first",
+  "apps.perf.autoscaling": "Autoscaling (HPA)",
+  "apps.perf.autoscalingHint": "When enabled, replicas are managed by HPA. Cluster must have metrics-server installed.",
+  "apps.perf.minReplicas": "Min Replicas",
+  "apps.perf.maxReplicas": "Max Replicas",
+  "apps.perf.targetCpu": "Target CPU",
+  "apps.perf.targetMemory": "Target Memory",
   "apps.config.noConfig": "No config items",
   "apps.config.addItem": "Add Item",
   "apps.config.fetchError": "Failed to fetch config",
diff --git a/web/locales/zh.ts b/web/locales/zh.ts
index 692dcae5..a6b1305a 100644
--- a/web/locales/zh.ts
+++ b/web/locales/zh.ts
@@ -155,6 +155,12 @@ const zh = {
   "apps.perf.saveSuccess": "环境配置保存成功",
   "apps.perf.saveError": "保存环境配置失败",
   "apps.perf.noAppInfo": "请先保存应用基本信息",
+  "apps.perf.autoscaling": "自动扩缩 (HPA)",
+  "apps.perf.autoscalingHint": "开启后 副本数将由 HPA 自动调整，集群需安装 metrics-server",
+  "apps.perf.minReplicas": "最小副本数",
+  "apps.perf.maxReplicas": "最大副本数",
+  "apps.perf.targetCpu": "CPU 目标利用率",
+  "apps.perf.targetMemory": "内存 目标利用率",
   "apps.config.noConfig": "暂无配置项",
   "apps.config.addItem": "添加配置项",
   "apps.config.fetchError": "获取配置失败",