The grab bucket bridge crane mainly consists of a box shaped bridge, a grab bucket trolley, a crane operating mechanism, a driver's cab, and an electrical control system. The retrieval device is a grab bucket. The grab bucket car is equipped with a lifting mechanism and an opening and closing mechanism, and the grab bucket is wrapped with four steel wire ropes on the lifting and opening and closing drums respectively. The opening and closing mechanism drives the grab to close and grab materials. When the bucket mouth is closed, the lifting mechanism is immediately activated to evenly load the four steel wire ropes for lifting work. When unloading, only the opening and closing mechanism is activated, and the hopper opening immediately opens and tilts the material. Except for the different lifting mechanisms, the rest of the structural parts of this crane are basically the same as the hook bridge crane.