diff --git a/src/main.cpp b/src/main.cpp
index 7f6949d..9c11a8c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -9,6 +9,48 @@
 
 using namespace toml;
 
+class BreathingLight
+{
+public:
+    BreathingLight() : brightness(0), step(15), increasing(true) {}
+
+    void update(SerialPort &serial)
+    {
+        LedCommand cmd;
+        cmd.setColor(brightness, brightness, 0); // 黄色
+        cmd.setExtCount(1);
+        auto packet = cmd.serialize();
+        if (!serial.writeData(packet.data(), packet.size()))
+        {
+            std::cerr << "发送数据失败" << std::endl;
+        }
+
+        if (increasing)
+        {
+            brightness += step;
+            if (brightness >= 255)
+            {
+                brightness = 255;
+                increasing = false;
+            }
+        }
+        else
+        {
+            brightness -= step;
+            if (brightness <= 0)
+            {
+                brightness = 0;
+                increasing = true;
+            }
+        }
+    }
+
+private:
+    int brightness;
+    int step;
+    bool increasing;
+};
+
 // 常红灯
 void alwaysRed(SerialPort &serial)
 {
@@ -43,35 +85,6 @@ void alwaysGreen(SerialPort &serial)
         std::cerr << "发送数据失败" << std::endl;
 }
 
-// 黄色呼吸灯效果
-void yellowBreathing(SerialPort &serial)
-{
-    LedCommand cmd;
-    std::cout << "开始黄色呼吸灯效果..." << std::endl;
-
-    // 呼吸灯亮度从0升到255
-    for (int i = 0; i <= 255; i += 15)
-    {
-        cmd.setColor(i, i, 0);
-        cmd.setExtCount(1);
-        auto packet = cmd.serialize();
-        if (!serial.writeData(packet.data(), packet.size()))
-            std::cerr << "发送数据失败" << std::endl;
-        std::this_thread::sleep_for(std::chrono::milliseconds(100));
-    }
-
-    // 呼吸灯亮度从255降到0
-    for (int i = 255; i >= 0; i -= 15)
-    {
-        cmd.setColor(i, i, 0);
-        cmd.setExtCount(1);
-        auto packet = cmd.serialize();
-        if (!serial.writeData(packet.data(), packet.size()))
-            std::cerr << "发送数据失败" << std::endl;
-        std::this_thread::sleep_for(std::chrono::milliseconds(100));
-    }
-}
-
 int main()
 {
     std::string port = "/dev/ttyS0";
@@ -118,6 +131,8 @@ int main()
         return 1;
     }
 
+    BreathingLight breathingLight;
+
     while (true)
     {
         mqtt.checkTimeout(std::chrono::seconds(3)); // 没消息则重置数据
@@ -135,7 +150,7 @@ int main()
         {
             if (speed > 0)
             {
-                yellowBreathing(serial);
+                breathingLight.update(serial);
             }
             else
             {
@@ -143,7 +158,7 @@ int main()
             }
         }
 
-        std::this_thread::sleep_for(std::chrono::milliseconds(500));
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
     }
 
     serial.closePort();