The present disclosure provides a detachable buckle, including a belt head, a tail clamp, a fixing base, buckle buttons. One end of the fixing base is a hollow slot, the one end of the fixing base is connected with the tail clamp, and at least one socket is disposed on the one end of the fixing base. An opening is disposed on an edge of the hollow slot. Sliding grooves are disposed on both ends of the tail clamp, and the one end of the tail clamp is near the fixing base. Insert blocks sliding along the sliding grooves are disposed inside the sliding grooves. The insert blocks are connected with the buckle buttons, the buckle buttons drive the insert blocks to enter the hollow slot of the fixing base by pushing the tail clamp, and the buckle buttons are fixed with the sockets.