Mixed reality technology can achieve a 3D reconstruction of the patient's imaging data and organically combine the real scene. This allows to simulate a real medical operation in clinical teaching. Combined with large data analysis

mixed reality technology allows to build situational awareness data models

thus providing data support for teaching interaction and disease simulations. In the present work

the application of mixed reality technology and situational awareness in clinical teaching of cardiac macrovascular surgery is explored innovatively. These technologies open a new avenue for teaching

solving the issue that stymies traditional teaching approaches and improving the teaching efficiency. It is thus important to explore and promote the applications of this innovative teaching methodology particularly in clinical teaching.