The electro-hydraulic folding arm grab ship unloader (with different grippers, it can realize multiple operation functions, and one machine can be used for multiple purposes) can quickly load, unload, stack and feed the small range and large batch of foamed, loose, scattered, pulled and disordered materials such as scrap, ore, iron powder and coal. With the significant advantages of safety, environmental protection, energy conservation and money saving, it complements the port policy of "low carbon and high efficiency" of many modern port groups, Quickly occupy the market of major ports and terminals, and act as the main operation force.