The invention discloses a hanging insulator string split detection robot, which comprises a frame, a roller mounted on the frame and capable of rotating on the frame, a controllable motorized winch that drives the roller to rotate, and one end fixedly connected to the roller The twisted grinding rope on the twisted grinding rope, the body of the insulator detection device fixed on the other end of the twisted grinding rope, the insulator detection unit installed on the body of the insulator detection device, the body of the insulator detection device includes a second controller chip, a second communication module, a second motor The driver, the third motor driver and the signal conditioning module, the insulator detection unit includes the first mechanical gripper, the first probe, the first gripping rotating motor, the first robotic arm, the first arm rotating shaft, the arm rotating motor, and the distance measuring sensor and detection sensor unit bracket and top rotation shaft mount. The invention has the advantages of simple physical structure, convenient tower climbing, high operation safety and the like.