The utility model discloses a high-torque ratchet wrench, which comprises a ratchet containing seat, a ratchet wheel and a pawl. The ratchet containing seat is provided with a cavity, the inner wall of the ratchet containing seat is provided with a groove communicated with the cavity, and the wall of the ratchet containing seat is further provided with a notch enabling the cavity to be communicated to the outside. The ratchet wheel is provided with an eccentric jaw for clamping a workpiece so that the ratchet wheel is in the shape of 'C', the circumferential surface of the ratchet wheel is provided with ratchets, the ratchet wheel and the pawl are mounted in the cavity and the groove respectively, and an elastic element further mounted in the groove is compressed between the inner surface of the groove and the pawl, so that the tail end of the pawl is abutted to one lateral surface of one ratchet in the circumferential direction under the action of reset force. Since the jaw of the ratchet wheel and the workpiece are positioned eccentrically, higher torque can be provided.