Solid medicament propelling device

The invention provides a solid medicament propelling device, and relates to the technical field of medical instruments, the solid medicament propelling device comprises a medicament storage body, a piston and a push rod; the medicament storage body comprises a containing cavity, one end of the containing cavity is a medicament outlet end, and the other end is a mounting opening; the piston can be clamped into the containing cavity from the mounting opening and comprises a blocking part and an elastic part, the elastic part is located on the side, away from the medicament outlet end, of the blocking part, and the elastic part extends in the axial direction of the containing cavity and is gradually increased from the medicament outlet end to the mounting opening; the piston is connected with the push rod and can move in the axial direction of the containing cavity under the action of the push rod so that the elastic part can tightly abut against the inner wall of the containing cavity. By means of the solid med