Glycerol enema negative pressure dosing device

The utility model discloses a glycerine enema negative pressure dosing device which comprises an injection needle cylinder, the injection needle cylinder comprises an extrusion section, a negative pressure section and a limiting section, the bottom of the extrusion section is communicated with an injection tube, and a medicine discharging opening is formed in one side of the extrusion section; a sealing partition plate is arranged at the upper end of the negative pressure section, and a sealing strip hole penetrates through the sealing partition plate. The sealing strip hole is slidably connected with a push rod, a piston connected with the push rod is slidably connected in the negative pressure section, and an extrusion sheet connected with the piston through a connecting rod is slidably connected in the extrusion section; a plurality of clamping teeth are arranged at the front end and the rear end of the push rod, lugs are arranged on the two opposite sides of the opening end of the limiting section, a rota