The invention discloses a closure device conveying system for a pediatric cardiac surgery department. The closure device conveying system comprises a puncture tube, a closure device placing tube and a pushing tube; the puncture tube is used for puncturing into the diseased portion of a human body, one end of the puncture tube is connected with the enclosure device placing tube, an enclosure device is arranged in the enclosure device placing tube, and the other end of the enclosure device placing tube is connected with the pushing tube; the pushing tube is composed of two corresponding semi-circular tubes, the surface of the pushing tube is sleeved with a seal film, and the surface of the seal film is sleeved with a fastening ring; a moving column corresponding to the pushing tube is arranged in the pushing tube, one end of the moving column is connected with a first pushing rod, the other end of the first pushing rod is connected with the enclosure device, the other end of the moving column is connected with a second pushing rod which extends to the outer side of the pushing tube, and one end of the second pushing rod is provided with a pushing plate. The closure device conveying system can be conveniently disassembled and assembled, can be conveniently disinfected and can be disinfected more comprehensively without dead angles.