The invention discloses a crawler type travelling system of a cable crane and the cable crane. The crawler type travelling system comprises a travelling frame, a crawler belt, bearing wheel sets and a hauling mechanism. A first tensioning wheel and a second tensioning wheel are arranged on the positions, close to the two ends of the travelling frame, of the travelling frame correspondingly; the crawler belt is tensioned on the first tensioning wheel and the second tensioning wheel to form an enclosed ring; the multiple bearing wheel sets are arranged at intervals in the length direction of the travelling frame and located inside the crawler belt, and the bearing wheel sets and the crawler belt move in the same direction; and the hauling mechanism is used for hauling the travelling frame to move. The bottom of a crane body of the cable crane is connected with the travelling frame through a connecting part. According to the cable crane, travelling with the heavy load can be achieved for complex different-span suspension bridges of various landforms, and the cable crane has the advantages that travelling with the load is large in carrying capacity, the pressure stress over main cables is small, tracks do not need to be paved on the main cables, main cable steel wires are protected, the structure is simple, and the economic, efficient, safe and stable effects are achieved.