diff --git a/apps/client/src/scenes/game/GameManager.ts b/apps/client/src/scenes/game/GameManager.ts
index a27851a..90b6e2a 100644
--- a/apps/client/src/scenes/game/GameManager.ts
+++ b/apps/client/src/scenes/game/GameManager.ts
@@ -8,6 +8,7 @@
   BombPlacedAckPayload,
   BombPlacedPayload,
 } from "@repo/shared";
+import { config } from "@client/config";
 import { socketManager } from "@client/network/SocketManager";
 import { AppearanceResolver } from "./application/AppearanceResolver";
 import { GameMapController } from "./entities/map/GameMapController";
@@ -48,7 +49,7 @@
   }
 
   private canAcceptInput(): boolean {
-    return !this.isInputLocked && this.timer.isStarted();
+    return this.inputLockCount === 0 && this.timer.isStarted();
   }
 
   // 現在の残り秒数を取得する
@@ -78,11 +79,21 @@
   private joystickInput = { x: 0, y: 0 };
   private isInitialized = false;
   private isDestroyed = false;
-  private isInputLocked = false;
+  private inputLockCount = 0;
 
-  public lockInput() {
-    this.isInputLocked = true;
+  public lockInput(): () => void {
+    this.inputLockCount += 1;
     this.joystickInput = { x: 0, y: 0 };
+
+    let released = false;
+    return () => {
+      if (released) {
+        return;
+      }
+
+      released = true;
+      this.inputLockCount = Math.max(0, this.inputLockCount - 1);
+    };
   }
 
   constructor(container: HTMLDivElement, myId: string) {
@@ -93,7 +104,8 @@
     this.worldContainer.sortableChildren = true;
     this.playerDeathPolicy = new PlayerDeathPolicy({
       myId: this.myId,
-      lockInput: this.lockInput.bind(this),
+      hitStunMs: config.GAME_CONFIG.PLAYER_HIT_STUN_MS,
+      acquireInputLock: this.lockInput.bind(this),
     });
   }
 
@@ -226,6 +238,8 @@
       return;
     }
 
+    this.playerDeathPolicy.applyLocalHitStun();
+
     socketManager.game.sendBombHitReport({ bombId });
   }
 
@@ -257,9 +271,11 @@
     this.bombManager = null;
     this.bombHitOrchestrator?.clear();
     this.bombHitOrchestrator = null;
+    this.playerDeathPolicy.dispose();
     this.reportedBombHitIds.clear();
     this.players = {};
-    this.isInputLocked = false;
+    this.inputLockCount = 0;
+    this.joystickInput = { x: 0, y: 0 };
 
     // イベント購読の解除
     this.networkSync?.unbind();
diff --git a/apps/client/src/scenes/game/application/PlayerDeathPolicy.ts b/apps/client/src/scenes/game/application/PlayerDeathPolicy.ts
index 207d74f..56b33b1 100644
--- a/apps/client/src/scenes/game/application/PlayerDeathPolicy.ts
+++ b/apps/client/src/scenes/game/application/PlayerDeathPolicy.ts
@@ -2,17 +2,22 @@
 
 type PlayerDeathPolicyParams = {
   myId: string;
-  lockInput: () => void;
+  hitStunMs: number;
+  acquireInputLock: () => () => void;
 };
 
 /** 被弾後のローカルプレイヤー処理ポリシーを管理する */
 export class PlayerDeathPolicy {
   private myId: string;
-  private lockInput: () => void;
+  private hitStunMs: number;
+  private acquireInputLock: () => () => void;
+  private activeLockRelease: (() => void) | null = null;
+  private unlockTimer: ReturnType<typeof setTimeout> | null = null;
 
-  constructor({ myId, lockInput }: PlayerDeathPolicyParams) {
+  constructor({ myId, hitStunMs, acquireInputLock }: PlayerDeathPolicyParams) {
     this.myId = myId;
-    this.lockInput = lockInput;
+    this.hitStunMs = hitStunMs;
+    this.acquireInputLock = acquireInputLock;
   }
 
   /** サーバーからの死亡通知に応じてローカル被弾後処理を適用する */
@@ -21,6 +26,43 @@
       return;
     }
 
-    this.lockInput();
+    this.applyHitStun();
+  }
+
+  /** ローカル被弾判定時に硬直を適用する */
+  public applyLocalHitStun(): void {
+    this.applyHitStun();
+  }
+
+  /** ポリシーが保持するタイマーと入力ロックを解放する */
+  public dispose(): void {
+    if (this.unlockTimer) {
+      clearTimeout(this.unlockTimer);
+      this.unlockTimer = null;
+    }
+
+    if (this.activeLockRelease) {
+      this.activeLockRelease();
+      this.activeLockRelease = null;
+    }
+  }
+
+  private applyHitStun(): void {
+    if (!this.activeLockRelease) {
+      this.activeLockRelease = this.acquireInputLock();
+    }
+
+    if (this.unlockTimer) {
+      clearTimeout(this.unlockTimer);
+      this.unlockTimer = null;
+    }
+
+    this.unlockTimer = setTimeout(() => {
+      this.unlockTimer = null;
+      if (this.activeLockRelease) {
+        this.activeLockRelease();
+        this.activeLockRelease = null;
+      }
+    }, this.hitStunMs);
   }
 }
diff --git a/packages/shared/src/config/README.md b/packages/shared/src/config/README.md
index 027f1af..bb57564 100644
--- a/packages/shared/src/config/README.md
+++ b/packages/shared/src/config/README.md
@@ -21,6 +21,7 @@
 - `GAME_CONFIG.GRID_ROWS`: マップ縦方向のグリッド数
 - `GAME_CONFIG.PLAYER_RADIUS`: プレイヤー当たり判定半径（グリッド単位）
 - `GAME_CONFIG.PLAYER_SPEED`: プレイヤー移動速度（1秒あたりのグリッド移動量）
+- `GAME_CONFIG.PLAYER_HIT_STUN_MS`: 被弾時に入力を停止する時間（ms）
 - `GAME_CONFIG.BOMB_RADIUS_GRID`: 爆風半径（グリッド単位）
 - `GAME_CONFIG.BOMB_FUSE_MS`: 爆弾設置から爆発までの時間（ms）
 - `GAME_CONFIG.BOMB_COOLDOWN_MS`: 次の爆弾を置けるまでの待機時間（ms）
diff --git a/packages/shared/src/config/gameConfig.ts b/packages/shared/src/config/gameConfig.ts
index 8f0ff0f..27a5d17 100644
--- a/packages/shared/src/config/gameConfig.ts
+++ b/packages/shared/src/config/gameConfig.ts
@@ -20,6 +20,7 @@
   PLAYER_RADIUS: 0.5, // プレイヤー半径（グリッド単位、目安: 0.05〜0.2）
   PLAYER_SPEED: 3, // 1秒当たりの移動量（グリッド単位）
   PLAYER_RENDER_SCALE: 1, // プレイヤー見た目サイズ倍率（1=等倍）
+  PLAYER_HIT_STUN_MS: 1000, // 被弾時に入力を停止する時間（ms）
 
   // 爆弾設定（内部座標はグリッド単位、時間はms、契約値）
   BOMB_RADIUS_GRID: 1.5, // 爆風半径（グリッド単位、円形当たり判定）