House building floor level detector

The utility model relates to a level detector, in particular to a building floor level detector. The technical problem of the utility model is to provide the floor level detector for the house building, which can quickly detect the perpendicularity of a wall body. According to the technical scheme, the floor level detector for the house building comprises a supporting block, first connecting blocks, a bubble level detector, an adjusting mechanism and a telescopic mechanism, the first connecting blocks are symmetrically arranged on one side of the supporting block, the bubble level detector is arranged between the first connecting blocks, and the telescopic mechanism is arranged on one side of the supporting block. An adjusting mechanism is arranged between the supporting block and one side of the telescopic mechanism. The device has the beneficial effects that people rotate a first rotating shaft to drive a gear to rotate, so that a first telescopic block is driven to move rightwards, a second telescopic bloc