Abstract: To solve the problems of the natural interaction and efficiency of the bionic manipulator control system,a bionic manipulator control system based on Leap Motion somatosensory technology is designed.Leap Motion was used to collect the coordinates of key points of the operator's hand,and a novel hand posture algorithm was proposed.The space coordinates are converted into hand angle parameters.Finally,we controlled the robot to complete the synchronous bionic motion.Experimental results show that the system can control the robot arm to simulate most of the human body's arm movements in real time.