The invention relates to a prepuce cutting stitching instrument, belonging to the technical field of medical instruments. The stitching instrument comprises a pair of hand valves, a pair of hand grips, a balance remover, a knife shell, a push-type broach disc, a bell-type cutting knife, a glans penis cap and a nail carrying container, wherein each hand valve is provided with a sliding cavity, a knob base and a pair of hand hinging bases; the hand grips are articulated with the hand hinging bases; the balance mover is connected with the hand grips; the knife shell is provided with a shell cavity and is fixed to the end faces of the hand valves; the push-type broach is provided with a cutting knife cavity, and a pushing knife shaft is extended from the center of the external side of the topwall of the push-type broach disc; the glans penis cap is provided with a glans penis cavity, a moving rod is fixed on the glans penis cap, the external wall of the base part of the glans penis cap is provided with a ring shaped groove, a clubfoot disc is inserted in the ring shaped groove, and the moving rod corresponds to the knob base and is matched with one adjusting knob; and the nail carrying container is arranged on the clubfoot disc. The invention has the advantages that the actions of cutting and stitching can be completed at a time, the speed of operation is increased, and the pain of patients can be alleviated.