Closing clamp capable of being opened and closed repeatedly

The utility model relates to the technical field of medical instruments, in particular to a closing clamp capable of being opened and closed repeatedly, which comprises a sleeve, a closing clamp body and a fixing sleeve, a blocking piece is fixed at the head of the sleeve, a blocking groove is formed between the outer peripheral wall of the blocking piece and the inner peripheral wall of the sleeve, and the closing clamp body comprises two clamping pieces which can be close to each other or far away from each other. The tail of the clamping piece penetrates through the blocking groove and is connected with a pull rod through a movable connecting piece, the middle of the clamping piece is provided with a first step face abutting against the blocking piece, the fixing sleeve is clamped to the tail of the sleeve, and the head of the fixing sleeve is provided with a second step face. The limiting structure is formed by the second step surface on the fixing sleeve and the movable connecting piece, and when the mov