diff --git a/.vscode/settings.json b/.vscode/settings.json
index 0856fb1..c850caf 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -10,6 +10,7 @@
         "esp_bt_main.h": "c",
         "esp_bt_defs.h": "c",
         "camera.h": "c",
-        "key.h": "c"
+        "key.h": "c",
+        "heating_plate.h": "c"
     }
 }
\ No newline at end of file
diff --git a/main/app_main.cpp b/main/app_main.cpp
index 2228d9f..a9fd90c 100644
--- a/main/app_main.cpp
+++ b/main/app_main.cpp
@@ -41,6 +41,7 @@ T_key_structer_t T_key_structer = {
  * ***************************************************heating_plate*************************************************** *
  ***********************************************************************************************************************/
 heating_plate_structer_t heating_plate_structer = {
+    .heating_plate_preheat_start_flag = false,
     .heating_plate_preheat_finished_flag = false,
 };
 
@@ -74,7 +75,8 @@ extern "C" void app_main(void)
     T_key_init(&T_key_structer);
     T_wifi_init();
     T_temp_init();
-    
+    T_heating_plate_init(&heating_plate_structer);
+
     T_key_registered_cb(process_key_event);
     T_wifi_registered_cb();
     T_heating_plate_registered_cb(T_temp_get_data);
diff --git a/main/heating_plate.c b/main/heating_plate.c
index 024d554..8234873 100644
--- a/main/heating_plate.c
+++ b/main/heating_plate.c
@@ -11,9 +11,16 @@
 
 #include "heating_plate.h"
 
+#define heating_plate_target_temp 48.0
+#define heating_plate_variable_temperature_range 0.5
+
+static heating_plate_structer_t *heating_plate_structer_s;
 static get_temp_callback_t get_temp_cb_s;
 
-void T_heating_plate_init(void) {}
+void T_heating_plate_init(heating_plate_structer_t *heating_plate_structer)
+{
+    heating_plate_structer_s = heating_plate_structer;
+}
 
 void T_heating_plate_registered_cb(get_temp_callback_t cb) { get_temp_cb_s = cb; }
 
@@ -21,4 +28,17 @@ void T_heating_plate_start(void) {}
 
 void T_heating_plate_stop(void) {}
 
-void T_heating_plate_schedule(void) { get_temp_cb_s(); }
\ No newline at end of file
+void T_heating_plate_schedule(void)
+{
+    if (heating_plate_structer_s->heating_plate_preheat_start_flag)
+    {
+        if (get_temp_cb_s() >= heating_plate_target_temp + heating_plate_variable_temperature_range)
+        {
+            T_heating_plate_stop();
+        }
+        else if (get_temp_cb_s() <= heating_plate_target_temp - heating_plate_variable_temperature_range)
+        {
+            T_heating_plate_start();
+        }
+    }
+}
\ No newline at end of file
diff --git a/main/heating_plate.h b/main/heating_plate.h
index ced47c9..aadd374 100644
--- a/main/heating_plate.h
+++ b/main/heating_plate.h
@@ -3,12 +3,13 @@
 
 typedef struct
 {
+    bool heating_plate_preheat_start_flag;
     bool heating_plate_preheat_finished_flag;
 } heating_plate_structer_t;
 
-typedef double(*get_temp_callback_t)(void);
+typedef double (*get_temp_callback_t)(void);
 
-void T_heating_plate_init(void);
+void T_heating_plate_init(heating_plate_structer_t *heating_plate_structer);
 void T_heating_plate_registered_cb(get_temp_callback_t cb);
 void T_heating_plate_start(void);
 void T_heating_plate_stop(void);