Substitute body structure of 3D printing model

The utility model provides a substitute body structure of a 3D printing model, and relates to the technical field of mouth rehabilitation. The substitute body structure of the 3D printing model comprises the printing model, a base station, a positioning body and a positioning nut, wherein the printing model is provided with a mounting channel; the base table is inserted into the mounting channel, and the outer wall of the base table abuts against the inner wall of the mounting channel; a positioning hole coaxial with the mounting channel is formed in the base station; the positioning body is inserted into the positioning hole, and one end of the positioning body is located in the mounting channel; the positioning nut is mounted in the mounting channel, and the positioning nut is in threaded connection with one end of the positioning body. The device is simple and compact in structure, does not rotate in use, and guarantees the scanning accuracy. 本实用新型提供一种3D打印模型的替代体结构，涉及口腔修复技术领域；本实用新型的3D打印模型的替代体结构包括打印模型、基台、定位体