The invention discloses an auxiliary ship winch. The auxiliary ship winch comprises a base. Traveling wheels are connected to the lower end of the base. A telescopic supporting rod is arranged on the upper portion of the base. The upper end of the telescopic supporting rod is connected with a telescopic cross rod. The other end of the telescopic cross rod is fixedly connected with an unloading rod. The lower end of the unloading rod is connected with an unloading claw. The telescopic supporting rod is sleeved with an unloading disc, and the unloading disc is rotationally connected with the telescopic supporting rod. A plurality of cargo containing grooves are formed in the edge of the unloading disc. The joint between each cargo containing groove and the unloading disc is open. A cargo returning plate is detachably connected to the telescopic supporting rod. A support is arranged on the base. An anti-falling mechanism covering the open ends of part of cargo containing grooves is arranged on the support. A pushing mechanism capable of pushing cargos into the cargo containing grooves is further arranged on the support. The auxiliary ship winch has the advantages of being reasonable in design, simple in structure and high in unloading efficiency.