The utility model provides a stealing gas pipeline cement paste pressure injector which comprises a sealing gland, a gland bolt, a tank body, a cement paste outlet, a support frame, an air inlet, a tie bar plate, a mining wheel, a pull-push arm, a rotating nut, a centralizing device, a stirring device, a positioning hole and a stirring crank, wherein the sealing gland, the gland bolt, the tank body, the cement paste outlet and the air inlet form a sealing cavity part; the support frame, the tie bar plate, the mining wheel and the pull-push arm form a bracket part; the rotating nut, the centralizing device, the stirring device, the positioning hole and the stirring crank form a stirring part; the cement paste outlet is designed on the side face of the bottom of the tank body; the tank body is formed by welding flanges, tube sections and steel plates, wherein the flanges have the same specification; a plurality of clamping grooves for accommodating the centralizing device are formed inside the tank body; and the rotating nut, the centralizing device and the stirring device are integrated. The stealing gas pipeline cement paste pressure injector has the advantages that the manufacturing process is simple, the number and labor intensity of transport workers are reduced, the working efficiency is improved, and the expected aim is fulfilled.