The invention discloses a dolly steel rope driven bridge type cantilever crane with a safety hook. The cantilever crane comprises two end beams and two main beams. Two end beams and two main beams form a dual beam crane span structure. Two end beams are provided with a hand pull cart operation device and a safety hook. An inverted U shaped track is arranged above both main beams. A running dolly is arranged between two tracks. The running dolly is provided with a steel rope driving device and a rotation mechanism. The lower end of the suspender shaft of the rotation mechanism is connected to acantilever member. The cantilever member comprises a cantilever beam, a suspended seat, and a diagonal draw bar. A connection hole and a key groove are arranged above the suspended seat. An operationwindow is arranged under the suspended seat. The lower part of the suspended seat is welded on one end of the cantilever beam, and the other end of the cantilever beam, the suspended seat, and the diagonal draw bar are welded together to form a triangular structure. The cantilever beam is composed of I steel or H shape steel. A hand-pull running cart is connected to the cantilever beam. A hand-pull chain hoist is hung under the hand-pull running cart. The cantilever beam is arranged under two main beams, can stretch out of a workshop to operate, and is capable of rotating.