The utility model discloses a self-locking rapid ratchet wrench, which is characterized by consisting of a handle, a self-locking body, a spring ring and a rotating body, wherein grooves are formed on the inner circle of the self-locking body and the outer circle of the rotating body respectively, and are opposite to each other on the same section; the spring ring is arranged in the grooves; the rotating body is arranged in a hole of the self-locking body, and is in sliding fit with the self-locking hole; the self-locking body, the spring ring and the rotating body are assembled to form a self-locking wrench head; the self-locking body of the self-locking wrench head is connected with the head part of the handle through a rivet; a gap is reserved in a housing on one side of the self-locking body, which is connected with the handle; and one side of the gap is connected with the head part of the handle through a rivet, and the other side of the gap contacts the limiting surface of the head part of the handle. The utility model has the advantages that: 1, the self-locking rapid ratchet wrench is convenient to operate and wide in application range; 2, the limitation of an angle of a workpiece is broken, a rotating radius is great, a rotating space is effectively utilized, working efficiency is improved, a bolt and a nut are rapidly assembled and disassembled, and high speed is really realized; and 3, a machining process is simple, low in cost and easy to implement.