Robot steering gear needs to achieve precise angle adjustment and position control to simulate human movements and action sequences. Installing a servo on the joint of the robot arm enables the robot arm to have flexible movement capabilities and be able to complete precise operation tasks. Steering gear is widely used in the head and eyes of robots to realize the rotation of the head and the gaze function of the eyes, and enhance the robot's interaction ability and expression ability. The MJ servo's small size, metal gears, high precision, and fast response speed ensure the smoothness and accuracy of robot product movements.