A jaw crusher having an embedded movable jaw (1), comprising a frame (4), a movable jaw (1) and a toggle plate (2) which are mounted on the frame (4), and a tensioning device (5); the movable jaw (1) is of a box structure, an eccentric shaft through-hole (11) is provided on an upper part of the movable jaw (1), and a toggle plate groove (12) is provided on a lower part of the movable jaw (1), the central axis of the toggle plate groove (12) being parallel to the central axis of the eccentric shaft through-hole (11); in the thickness direction of the movable jaw (1), the toggle plate groove (12) is embedded in the movable jaw (1); in the width direction of the movable jaw (1), there is a certain distance between two ends of the toggle plate groove (12) and two ends of the movable jaw (1); and the toggle plate (2) extends into the toggle plate groove (12) and is connected to the movable jaw (1) in an abutting manner.