The invention discloses a movable jaw crusher which comprises a driving motor, a movable frame, a belt pulley, an inertia wheel, an eccentric shaft, a movable jaw plate, a fixed jaw plate, a guide seat, a guide block, a limiting plate and an elastic reset device. The two sides of the movable frame are symmetrically provided with machine plates, and an installation cavity is formed between the twomachine plates. The movable jaw crusher is ingenious in structural design, the structure of the movable frame is reasonably designed to form the installation cavity, convenience is brought to installation of other components, the size is effectively reduced, the bottom surface of the tail of the movable frame is provided with movable wheels, the whole can be conveniently dragged through a hook groove, movability is good, transportation and use are convenient, meanwhile, the movable jaw plate is of an obliquely-arranged structure, the crushing action of the movable jaw plate can be matched better, the working efficiency is effectively improved, the crushing effect is good, working stability is good, the economic benefits and the social benefits are good, and wide application and popularization are facilitated.