The invention discloses a bionic mechanical arm based on human skeleton identification. The bionic mechanical arm based on the human skeleton identification comprises a supporting seat, a computer vision system fixed to the supporting seat, a mechanical arm body provided with a human arm bone type conventional structure and bionic drive parts. The computer vision system is electrically connected with the bionic drive parts, the bionic drive parts are arranged on the upper part of the supporting seat and are connected with a shoulder joint of the mechanical arm body, and the bionic drive partsare correspondingly arranged at other joint positions of the mechanical arm body and connect the mechanical arm body into a whole. The computer vision system traces and collects human arm motion information, three-dimensional reconstruction is carried out on human arm skeleton motion based on the human arm motion information, drive data of joint points of human arm skeletons are obtained and separately sent to the bionic drive parts, and the bionic drive parts drive the mechanical arm body to move according to the drive data. According to the bionic mechanical arm based on the human skeleton identification, the structure is more flexible, and control is more convenient.