Building deep foundation pit structure capable of conveniently preventing soil accumulation on edge of foundation pit

The invention belongs to the technical field of building foundation pit cleaning equipment, and particularly relates to a building deep foundation pit structure capable of conveniently preventing soil accumulation at the edge of a foundation pit, the building deep foundation pit structure comprises a bearing seat, a plurality of fixing piles are fixedly connected to the side wall of the bearing seat at equal intervals, a shell is arranged on the side of the bearing seat, and a detection mechanism and a collection assembly are arranged in the shell. By arranging the adjusting assembly, the falling soil interception position can be conveniently adjusted, the protection effect of the device can be well achieved, falling soil is prevented from being accumulated at the bottom of a foundation pit, by arranging the detection mechanism, the falling soil can be efficiently detected, and the left partition and the right partition of the device where the falling soil is located are judged; the detection assembly provide