diff --git a/electron/bridges/inspection/index.cjs b/electron/bridges/inspection/index.cjs
index c0a117b..ac6fb4e 100644
--- a/electron/bridges/inspection/index.cjs
+++ b/electron/bridges/inspection/index.cjs
@@ -1462,6 +1462,11 @@ function registerInspectionHandlers(ipcMain, options) {
 
   ipcMain.handle("inspection:runReportSnapshot", async (_e, payload) => {
     const { deviceTargets = [], trigger = "manual" } = payload || {};
+    // 防重入：快照正在执行中就拒绝（用户连点按钮或定时 tick 并发）
+    if (_isSnapshotRunning) {
+      console.warn("[Inspection:runReportSnapshot] 快照正在执行中，拒绝并发请求");
+      return { ok: false, error: "快照正在执行中，请稍候" };
+    }
     _isSnapshotRunning = true;
     // 广播 running 状态（页面切换后回来的 renderer 也能收到）
     try {
@@ -2075,6 +2080,11 @@ function registerInspectionHandlers(ipcMain, options) {
   // ─── Electron 启动时自动启动 reportScheduler ───
   // 负责：per-device 定时快照 tick（主进程自身 SSH 执行） + dailyReport HH:MM 定时聚合
   async function _runScheduledSnapshot(deviceIds, trigger = "scheduled") {
+    // 与 IPC 手动触发路径互斥：防止定时 tick 和用户手动按钮并发跑快照
+    if (_isSnapshotRunning) {
+      console.warn("[reportScheduler] _isSnapshotRunning=true（可能是手动触发在执行），跳过本次定时快照");
+      return;
+    }
     if (!_hostConfigs || Object.keys(_hostConfigs).length === 0) {
       console.warn("[reportScheduler] _hostConfigs 未初始化，定时快照跳过（需先打开监控页面让 renderer 同步 SSH 凭据到主进程）");
       return;
@@ -2109,10 +2119,13 @@ function registerInspectionHandlers(ipcMain, options) {
       return;
     }
     console.log(`[reportScheduler] 主进程执行定时快照，目标 ${targets.length} 台`);
+    _isSnapshotRunning = true;
     try {
       await _executeSnapshot(targets, trigger);
     } catch (e) {
       console.error("[reportScheduler] 定时快照执行失败:", e?.message || String(e));
+    } finally {
+      _isSnapshotRunning = false;
     }
   }
 
diff --git a/electron/bridges/inspection/reportScheduler.cjs b/electron/bridges/inspection/reportScheduler.cjs
index 7d509a7..8e8f758 100644
--- a/electron/bridges/inspection/reportScheduler.cjs
+++ b/electron/bridges/inspection/reportScheduler.cjs
@@ -19,6 +19,7 @@ const dailyReportStore = require("./dailyReportStore.cjs");
 let _tickTimer = null;
 let _dailyTimer = null;
 let _lastDailyTriggerKey = null;   // 用于 HH:MM 日报告每日只触发一次
+let _inProgress = false;           // 快照执行中锁 —— 防止执行时间 >60s 时被下一个 tick 重入
 
 /**
  * 启动 reportScheduler
@@ -40,6 +41,12 @@ function start({ readStorage, writeStorage, runSnapshotFn, onDailyReportReady, g
     const cfg = reportScheduleStore.getSchedule(readFn);
     if (!cfg.enabled) return;
 
+    // 防重入：快照正在执行中就跳过（执行时间 >60s 时下一个 tick 会撞到）
+    if (_inProgress) {
+      console.log("[reportScheduler] tick: 上一个快照还在执行，跳过");
+      return;
+    }
+
     const now = Date.now();
     const intervalMs = (cfg.defaultIntervalHours || 1) * 3600 * 1000;
     const lastRun = cfg.lastRunAt || 0;
@@ -78,6 +85,7 @@ function start({ readStorage, writeStorage, runSnapshotFn, onDailyReportReady, g
     }
 
     console.log(`[reportScheduler] tick: 到点，${enabledDeviceIds.length} 台设备，interval=${cfg.defaultIntervalHours}h，距上次 ${(sinceLast/60000).toFixed(1)} 分钟`);
+    _inProgress = true;
     try {
       await runSnapshotFn(enabledDeviceIds, "scheduled");
       // 持久化 lastRunAt —— 重启 Electron 也知道上次什么时候跑的
@@ -86,6 +94,8 @@ function start({ readStorage, writeStorage, runSnapshotFn, onDailyReportReady, g
       console.log("[reportScheduler] ✅ 快照完成，lastRunAt 已持久化");
     } catch (e) {
       console.error("[reportScheduler] runSnapshot 失败:", e?.message || String(e));
+    } finally {
+      _inProgress = false;
     }
   };