The side-mounted electric hoist gantry crane is mainly composed of mast (main beam, outrigger, lower beam, etc.), hoisting mechanism, operating mechanism and electronic control part. The electric hoist is used as the hoisting mechanism. The lower flange of the shaped steel runs. The outriggers and the lower crossbeam form an L shape, with large lifting space and strong spanning ability, which is convenient for transferring objects from the span to under the cantilever. It is suitable for general loading, unloading and hoisting work in outdoor places such as factories, mines, cargo yards and warehouses within the range of small and medium lifting capacities. There are three operation modes: ground handle, wireless remote control and driver's cab. There are two forms of power supply: cable reel and high-altitude sliding line.