The invention discloses a connection release structure and a system, wherein the connection release structure is configured for connecting a release object and is arranged on a loading sheath tube, and comprises a connection fixing system and an unlocking sleeve system； the connection fixing system comprises a hook structure, the unlocking sleeve system comprises an unlocking sleeve, the connection fixing structure and the unlocking sleeve are movably connected with the loading sheath tube, the connection fixing structure is configured for being connected with the release object, and the unlocking sleeve is configured for locking the connection fixing structure and the release. The connection release structure and the connection fixing system provided by the invention can accurately control the stability and coaxiality of the valve stent in the release process, effectively adjust the position of the valve stent in the implantation process or completely retract the valve stent so as to ensure that the valve has a good working state after being implanted.
