The utility model provides a follow -on pipe pushing jack blade disc which the main points lie in adding at the edge on pipe pushing jack blade disc surface has welded the shell sword, and the cross section of shell sword is semi -circular for excessively, by top central authorities to five wear -resisting teeth of high -strength alloy of both ends evenly distributed. The beneficial effects of the utility model are that to the less input makes ordinary pipe pushing jack possess certain broken barrier function, can solve and advance the great barrier of intensity that the in -process probably runs into on the top.