House hollowing detection device

The utility model relates to a house hollowing detection device convenient to mark, in particular to a house hollowing detection device which comprises a telescopic rod, the upper surface of the telescopic rod is fixedly connected with the lower surface of a hammer body, the right side face of the telescopic rod is fixedly connected with the left side face of an installation plate, and a spraying assembly is installed on the right side face of the installation plate. The lower sides of the front face and the back face of the telescopic rod are hinged to the front face and the back face of the inner wall of a grip b, a marking assembly is arranged on the upper surface of the grip b, a threaded column is rotated to be attached to a connecting rope, then the connecting rope is fixed in a wire outlet cylinder, the grip b is pulled to drive the grip a to move downwards, and then the hollowing position is marked through a spray gun. And the coating liquid is more obvious in color, accurate marking is facilitated, a