The invention discloses an air pressure grouting pump system. The air pressure grouting pump system is composed of a grout supplementing tank, a grout supplying tank, an air compressor and a high-pressure grouting pipe. The grout supplementing tank is provided with a supplementing tank air inlet pipe, a supplementing tank discharging pipe, a supplementing tank feeding hopper and a supplementing tank inner grouting level measuring system. The grout supplying tank is provided with a supplying tank air inlet pipe, a supplying tank discharging pipe, a supplying tank feeding pipe and a feeding grouting level measuring system. A supplying tank feeding hole is connected with the discharging pipe of the grout supplementing tank through the high-pressure grouting pipe. According to the air pressure grouting pump system, a special device for pouring cement grout in grouting engineering is mainly used, and the air pressure grouting pump system is mainly used for curtain grouting of mines and foundation pit engineering, grouting consolidation and anchoring, large-displacement and long-distance grout conveying and the like.