Traditional surgical navigation systems require operators to switch their eyes between the display screen and the lesion area. In order to solve this problem, augmented reality surgical navigation has been applied. This paper designs an augmented reality navigation system for interventional surgery in order to solve the problem that the operator cannot directly observe the relative position of the patient's lesion and surgical instruments during interventional procedures.The Unity software is used as the development platform to design the virtual surgical path before surgery and to display the relative distance between the lesion area and the surgical instruments in real time intraoperatively. The accuracy of the navigation system was verified using skull and ladder table experiments, and the virtual display showed an error of about 3.3 mm. This study confirms the feasibility of augmented reality surgical navigation for preoperative planning and real-time intraoperative guidance in interventional procedures.