In order to solve the problems that traditional process of making the prosthetic socket depends on plaster molding, and the metal positive four-claw connecting disc and the prosthetic socket depend on manual processing and connection, a method of making prosthesis socket based on SLA 3D printing technology was proposed. Through the iterative design of simulation analysis software, the socket model with reasonable pressure was obtained. The photosensitive resin socket was combined with the metal positive four-claw connecting disc by the forward and backward hybrid modeling method. The results show that the 3 mm thick photosensitive resin material could meet the application requirements of prosthetic socket. When the slice thickness was 0.2 mm, the composite effect of photosensitive resin socket and metal positive four-claw connecting disc was the best. The feasibility of printing the prosthesis socket with SLA 3D was verified.