Tumor radiotherapy positioning device

The utility model discloses a tumor radiotherapy positioning device, which belongs to the technical field of medical auxiliary instruments and comprises a moving plate, the outer side wall of the moving plate is fixedly connected with a concave strip shell, and a double-end translation adjusting mechanism is arranged in the concave strip shell. The two ends of the double-end translation adjusting mechanism extend to the positions above the two sides of the concave strip shell correspondingly and are fixedly connected with two symmetrically-arranged mounting plates, the sides, far away from each other, of the two mounting plates are fixedly connected with two transversely-symmetrically-arranged telescopic cylinders, and the output ends of the telescopic cylinders penetrate through the mounting plates and are fixedly connected with pressure buffering mechanisms. According to the utility model, the positions of the two positioning clamping plates can be adjusted through the arrangement of the double-end translat