With the rapid development of modern medical technology, the training of medical imaging professionals is changing with each passing day, and science and technology are developing rapidly, especially 3D digital reconstruction and AR_MR technology are applied to medical clinic and medical education. With the continuous transformation of medical technology mode, it is the most important problem for modern medical technology to discuss how 3D digital reconstruction and AR_MR technology can better meet the convenience characteristics and connotation of early diagnosis and treatment. Aiming at the discussion of 3D digital reconstruction and AR_MR technology, this paper applies 3D digital reconstruction and AR_MR technology to many technologies and directions in medicine. Combining with practical medical application and continuous exploration, this study systematically analyzes the application of AR_MR technology and 3D digital reconstruction technology in medicine, which proves the operability, feasibility and sustainable development of 3D digital reconstruction and AR_MR technology in medical technology. It provides a new idea and perspective for the development of modern virtual imaging and the integration of virtual reality technology and medicine.