Rapidly-changed stent implantation system

A rapidly-changed stent implantation system is characterized in that the stent implantation system (10) comprises a guide wire (2), an inner tube (3), a plastic support (4) a guide part, a developing ring (7), an outer guide tube (8), a front handle (15), a handle assembly (16), a push assisting tube (17) and a rear handle (18), the guide wire (2) is arranged in the inner tube (3), the near end of the outer guide tube (8) is fixed to the front handle (15) together, the near end of the inner tube (3) is fixed to the rear handle (18) through the push assisting tube (17), the developing ring (7) is fixed to the inner tube (3), and the guide part is installed on inner tube (3). Compared with the prior art, the guide wire is not needed to be drawn out during stent implantation and can be still kept at the position required by a medical worker. Due to the fact that the position and the distance of a narrow groove are adjustable, the guide wire can be led out of the system only by needing a very short distance, and the problem does not exist.