Novel foundation pit detector

The invention discloses a novel foundation pit detector, and belongs to the technical field of foundation pit detection. The novel foundation pit detector comprises a detection mechanism, a fixed mechanism and a moving mechanism; the detection mechanism and the moving mechanism are both arranged on the fixed mechanism; the detection mechanism is located above the fixed mechanism; the moving mechanism is located below the fixed mechanism; the detection mechanism and the moving mechanism are both connected with the fixed mechanism; and the working end of the detection mechanism penetrates through the fixed mechanism. According to the novel foundation pit detector, the problem that the specific detection value of the depth of a foundation pit cannot be rapidly obtained in the prior art can be solved, the problem that working efficiency is reduced due to the fact that detection equipment in the prior art cannot rapidly conduct replacement detection on all foundation pits is solved, and the working efficiency is i