Safe foundation pit edge protecting device for building engineering construction

The utility model discloses a safe foundation pit edge protecting device for constructional engineering construction, which relates to the technical field of edge protecting devices and comprises a left sliding rail connected with a right sliding rail through a protecting device. A plurality of left sliding blocks are slidably connected into the left sliding rail, and a plurality of right sliding blocks are slidably connected into the right sliding rail. The left sliding block and the opposite right sliding block are connected through a protection device. First through holes are formed in the first ends of the left sliding rail and the right sliding rail; second through holes are formed in the left sliding rail, the right sliding rail, the left sliding block and the right sliding block; the two first through holes and the plurality of second through holes are respectively provided with detachable ground gripping pieces. On the basis of ensuring that the firmness is improved, the device can be disassembled wit