The invention relates to the field of engineering construction, aims to solve the problem of poor foundation reinforcement effect, and provides a soft foundation grouting pipe. The technical scheme isas follows that the soft foundation grouting pipe comprises a tube body, wherein the tube body is inserted into the end of the foundation to be closed, the side wall of the pipe body is fixedly provided with a telescopic pipe penetrating through the side wall of the pipe body, when the telescopic pipe is completely contracted, the end part extending out of the telescopic pipe is located in the side wall of the pipe body, the end part, extending out of the telescopic pipe, of the telescopic pipe is closed, a plurality of grouting holes are formed in the side wall of the telescopic pipe, and aone-way valve which only allows the cement grout to flow outside the telescopic pipe is arranged on the grouting hole. The invention further provides a foundation reinforcing and reinforcing method, the foundation reinforcing and reinforcing method comprises the steps that a drill hole to be reinforced is drilled and inserted into a grouting pipe, grouting and pumping grout are carried out, a grouting pipe is rotated, grouting is carried out again, pumping grout is carried out, a grouting pipe is taken out, and drilling is carried out. According to the soft foundation grouting pipe, the telescopic pipe extends out through the hydraulic driving of the grout, the telescopic pipe extends out, and the cement grout is injected into the foundation soil from the grouting holes, so that the grouting range is large, the distribution is uniform, and the foundation reinforcing effect is good.