Surgical robot system for radioactive seed interventional therapy of tumors and operating method

The invention discloses a surgical robot system for radioactive seed interventional therapy of tumors and an operating method and relates to the field of medical instruments. A host is connected with a display screen and connected with a CT (computed tomography) machine and a robot arm; multiple rows of radioactive seed injection guiding holes are distributed in an injector guide template side by side, and the injector guide template is clamped by a six-DOF (degree of freedom) robot arm; a robot manual operation panel is connected with the robot arm, and the robot arm is fixed on the edge of a CT bed, can slide along the edge of the CT bed and can enter the inside of the CT machine along with the CT bed; after the operation robot host acquires information of the position required to be treated according to a CT image, the posture of a positioning probe on the guide template at the tail end of the robot arm is judged; the system gives an instruction to move the robot arm, the guide template is placed in the position where radioactive seeds are required to be injected, and an injector punctures the tumor part along the injection guiding holes in the guide template, injects the radioactive seeds and controls the injection amount according to a diagnosis result.