A ratchet wrench includes a body, a ratchet wheel, a pawl, a ring, a top clip and a bottom clip. The body includes a through hole which defines through the top and the bottom of the body. A top recessed area and a bottom recessed area are respectively defined in the top and the bottom of the body. A recess is defined in the inner periphery of the through hole and a protrusion with a receiving slot extends from one end of the recess. A resilient member is received in the receiving slot to bias the pawl in the recess to engage with the ratchet wheel. The ring is engaged with the top recessed area. The top clip is engaged with the top recessed area and clips the ratchet wheel. The bottom clip is engaged with the bottom recessed area and clips the ratchet wheel.