The invention relates to the technical field of cardiovascular medical instruments, in particular to a tool for implanting a vessel dilator. The tool comprises a sliding rail and a push rod which is inserted into the sliding rail and can move in the axial direction, an axial propelling mechanism provided with a gear and a rack which are meshed with each other is arranged at the rear end of the push rod, a spiral jacket is installed on the push rod in a sleeving mode, the spiral jacket is formed by winding a special-shaped monofilament in a spiral mode, an upper clamping screw and a lower clamping screw are symmetrically arranged at the upper end and the lower end of the section of the special-shaped monofilament, one end of the special-shaped monofilament is fixedly connected to the front end of the push rod, and the other end of the special-shaped monofilament is fixedly connected to the guide rail. The tool is simple in structure, convenient to operate and wide in application range.