diff --git a/app/src/main/res/layout-land/activity_main.xml b/app/src/main/res/layout-land/activity_main.xml
index af25e1c1..02e4696b 100644
--- a/app/src/main/res/layout-land/activity_main.xml
+++ b/app/src/main/res/layout-land/activity_main.xml
@@ -154,6 +154,7 @@
         android:layout_marginTop="@dimen/activity_vertical_margin_small"
         android:text="Start"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/heartbeat"
 
@@ -165,6 +166,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:enabled="false"
         android:text="Stop"
         app:layout_constraintStart_toEndOf="@+id/btnStartServ"
@@ -176,6 +178,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="Save"
         app:layout_constraintStart_toEndOf="@+id/btnStopServ"
         app:layout_constraintTop_toTopOf="@+id/btnStartServ" />
@@ -186,6 +189,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="通道设置"
         app:layout_constraintStart_toEndOf="@+id/btnSaveCfg"
         app:layout_constraintTop_toTopOf="@+id/btnStartServ" />
@@ -198,6 +202,7 @@
         android:layout_marginTop="@dimen/activity_vertical_margin"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tp_ch1"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/btnStartServ" />
@@ -208,6 +213,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tp_ch2"
         app:layout_constraintStart_toEndOf="@+id/btnTakePhoto"
         app:layout_constraintTop_toTopOf="@+id/btnTakePhoto" />
@@ -218,6 +224,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tp_ch3"
         app:layout_constraintStart_toEndOf="@+id/btnTakePhoto2"
         app:layout_constraintTop_toTopOf="@+id/btnTakePhoto" />
@@ -228,6 +235,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tp_ch4"
         app:layout_constraintStart_toEndOf="@+id/btnTakePhoto3"
         app:layout_constraintTop_toTopOf="@+id/btnTakePhoto" />
@@ -239,6 +247,7 @@
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:layout_marginTop="@dimen/activity_vertical_margin_small"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tv_ch1"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/btnTakePhoto" />
@@ -249,6 +258,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tv_ch2"
         app:layout_constraintStart_toEndOf="@+id/takeVideoBtn"
         app:layout_constraintTop_toTopOf="@+id/takeVideoBtn" />
@@ -259,6 +269,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tv_ch3"
         app:layout_constraintStart_toEndOf="@+id/takeVideoBtn2"
         app:layout_constraintTop_toTopOf="@+id/takeVideoBtn" />
@@ -269,6 +280,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         android:text="@string/btn_tv_ch4"
         app:layout_constraintStart_toEndOf="@+id/takeVideoBtn3"
         app:layout_constraintTop_toTopOf="@+id/takeVideoBtn" />
@@ -281,6 +293,7 @@
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:layout_marginTop="@dimen/activity_vertical_margin_small"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/takeVideoBtn" />
 
@@ -291,6 +304,7 @@
         android:text="@string/main_restart_app"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         app:layout_constraintStart_toEndOf="@+id/btnSendHb"
         app:layout_constraintTop_toTopOf="@+id/btnSendHb" />
 
@@ -301,6 +315,7 @@
         android:text="@string/main_reboot"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         app:layout_constraintStart_toEndOf="@+id/btnRestartApp"
         app:layout_constraintTop_toTopOf="@+id/btnSendHb" />
 
@@ -311,6 +326,7 @@
         android:text="@string/main_camera_info"
         android:layout_marginStart="@dimen/activity_horizontal_margin"
         android:minWidth="@dimen/activity_btn_min_width"
+        android:minHeight="@dimen/activity_btn_min_height"
         app:layout_constraintStart_toEndOf="@+id/btnReboot"
         app:layout_constraintTop_toTopOf="@+id/btnSendHb" />
 
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 5991ad1a..dcd3a378 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -7,4 +7,5 @@
     <dimen name="activity_horizontal_spacing">8dp</dimen>
     <dimen name="activity_vertical_spacing">8dp</dimen>
     <dimen name="activity_btn_min_width">72dp</dimen>
+    <dimen name="activity_btn_min_height">28dp</dimen>
 </resources>