Surgical aspirator

The utility model discloses a surgical aspirator, which belongs to the field of medical instruments and comprises a thick tube, a thin tube fixedly connected to the bottom of the thick tube and a hollow cylinder fixedly connected to the top of the thick tube, a flushing tube joint and a suction tube joint are fixedly connected onto the hollow cylinder, and a cylindrical block is rotatably connected into the hollow cylinder. Balls are elastically connected to the two end faces of the cylindrical block, grooves matched with the balls are formed in the inner wall of the hollow cylinder, and a scraping strip is slidably connected to the inner wall of the thin pipe. The thick tube and the thin tube are arranged in a matched mode, the thin tube can stretch into the body of a patient more conveniently, in the suction process, resistance generated when sucked blood stains and other substances enter the thick tube is reduced, smoothness of the device is further guaranteed, the scraping strip can be driven to slide in