Interventional instrument conveying device convenient to recycle and control

An interventional instrument conveying device convenient to recycle and control comprises a loading assembly and an outer sheath tube (5) arranged outside the loading assembly in a sliding and sleeving mode, a positioning part matched with an interventional instrument is arranged in the loading assembly, and an auxiliary limiting piece is arranged between the outer sheath tube (5) and the loading assembly and has a locking state and a locking state; the auxiliary limiting piece applies acting force to the interventional instrument under the constraint of the outer sheath tube (5) so as to prevent the interventional instrument from being separated from the positioning part; in the unlocking state, the auxiliary limiting piece relieves the acting force to allow the interventional instrument to be separated from the positioning part. According to the interventional instrument conveying device, the near-end side which is finally released can be fastened in the release process of the interventional instrument, the