diff --git a/src/core/voice_input_service.cpp b/src/core/voice_input_service.cpp
index 7796847..12b9dab 100644
--- a/src/core/voice_input_service.cpp
+++ b/src/core/voice_input_service.cpp
@@ -51,6 +51,14 @@ VoiceInputService::VoiceInputService(ConfigManager* configManager,
             emit statusChanged("正在录音...");
         }
     });
+
+    // 松开后的冷却定时器
+    cooldownTimer_ = new QTimer(this);
+    cooldownTimer_->setSingleShot(true);
+    connect(cooldownTimer_, &QTimer::timeout, this, [this]() {
+        cooldownActive_ = false;
+        LOG_DEBUG(kTag, "冷却期结束，恢复 CapsLock 检测");
+    });
 }
 
 VoiceInputService::~VoiceInputService() {
@@ -103,6 +111,7 @@ void VoiceInputService::stop() {
     if (!running_) return;
 
     longPressTimer_->stop();
+    cooldownTimer_->stop();
 
     if (impl_->audioCapture) {
         impl_->audioCapture->stop();
@@ -115,6 +124,7 @@ void VoiceInputService::stop() {
     recording_ = false;
     longPressDetected_ = false;
     capsResetDone_ = false;
+    cooldownActive_ = false;
     audioBuffer_.clear();
 
     LOG_INFO(kTag, "语音输入服务已停止");
@@ -127,6 +137,12 @@ void VoiceInputService::onHotkeyActivated() {
         return;
     }
 
+    // 冷却期内 → 忽略
+    if (cooldownActive_) {
+        LOG_DEBUG(kTag, "忽略 Activated（冷却期内）");
+        return;
+    }
+
     LOG_DEBUG(kTag, "快捷键激活（按下）");
     recording_ = true;
     longPressDetected_ = false;
@@ -166,6 +182,11 @@ void VoiceInputService::onHotkeyDeactivated() {
 
     longPressDetected_ = false;
     capsResetDone_ = false;
+
+    // 启动冷却期，1s 内忽略新的 Activated
+    cooldownActive_ = true;
+    cooldownTimer_->start(releaseCooldownMs_);
+    LOG_DEBUG(kTag, QString("冷却期启动 (%1ms)").arg(releaseCooldownMs_));
 }
 
 void VoiceInputService::onAudioData(const std::vector<float>& samples, int sampleRate) {
diff --git a/src/core/voice_input_service.h b/src/core/voice_input_service.h
index cb4880f..15ca6c3 100644
--- a/src/core/voice_input_service.h
+++ b/src/core/voice_input_service.h
@@ -68,12 +68,15 @@ private:
     bool recording_ = false;
     bool longPressDetected_ = false;
     bool capsResetDone_ = false;  // CapsLock 复位后忽略重复 Activated
+    bool cooldownActive_ = false;  // 松开后的冷却期，防止立即重新触发
     int longPressThreshold_ = 1000;
+    int releaseCooldownMs_ = 1000;  // 松开后冷却时间
 
     std::vector<float> audioBuffer_;
     int audioSampleRate_ = 16000;
 
     QTimer* longPressTimer_ = nullptr;
+    QTimer* cooldownTimer_ = nullptr;
 
     void startRecording();
     void stopRecordingAndTranscribe();