diff --git a/docs/assets/img/product_pics/accessory/SG90_servo/servo_p1.jpg b/docs/assets/img/product_pics/accessory/SG90_servo/servo_p1.jpg
index 6e61035e..5979d989 100644
Binary files a/docs/assets/img/product_pics/accessory/SG90_servo/servo_p1.jpg and b/docs/assets/img/product_pics/accessory/SG90_servo/servo_p1.jpg differ
diff --git a/docs/en/accessory/sg90_servo.md b/docs/en/accessory/sg90_servo.md
index 4d2ee0f4..11c538a7 100644
--- a/docs/en/accessory/sg90_servo.md
+++ b/docs/en/accessory/sg90_servo.md
@@ -21,8 +21,8 @@ a stepper motor, it is much simpler to use. You can use it to do some interestin
 - Gear material: plastic teeth
 - Weight： 9g
 - Size： 23mm x 12.2mm x 29mm
-- Torque： 1.6kg•cm/4.8V；1.8kg•cm/6.0V
-- Speed： 0.1sec/60°/4.8V; 0.09sec/60°/6.0V
+- Torque： 1.6kg•cm/4.8V;1.8kg•cm/6.0V
+- Speed： 0.1sec/60°/4.8V;0.09sec/60°/6.0V
 - Cable length： 3cm
 - dead zone： 4μm
 - Spline： 21T
diff --git a/docs/zh_CN/accessory/sg90_servo.md b/docs/zh_CN/accessory/sg90_servo.md
index 2f0a0a68..240fe53b 100644
--- a/docs/zh_CN/accessory/sg90_servo.md
+++ b/docs/zh_CN/accessory/sg90_servo.md
@@ -22,8 +22,8 @@
       - 齿轮材质： 塑胶齿
       - 重量： 9g
       - 尺寸： 23mm x 12.2mm x 29mm
-      - 扭力： 1.6kg•cm/4.8V；1.8kg•cm/6.0V
-      - 速度： 0.1sec/60°/4.8V; 0.09sec/60°/6.0V
+      - 扭力： 1.6kg•cm/4.8V;1.8kg•cm/6.0V
+      - 速度： 0.1sec/60°/4.8V;0.09sec/60°/6.0V
       - 线长： 3cm
       - 死区： 4μm
       - 花键： 21T