Civil engineering building detection device

The civil engineering building detection device comprises a floor slab, a rectangular shell, a sound wave reflection seat, a switch, a liquid crystal display screen, a connecting block, a handle, a loudspeaker, a bottom plate, an ultrasonic sensor, a fastening screw, a telescopic column, a threaded column, a connecting column, an adjusting screw, anti-skid hand glue and a storage battery. The beneficial effects of the utility model are that the center of the top of the rectangular housing is fixedly provided with the connecting block, the right side of the connecting block is horizontally connected with the handle, and the handle is glued with the antiskid hand glue, so that a worker can rapidly lift the rectangular housing by holding the handle, and the bottom of the rectangular housing is provided with the ultrasonic sensor. Ultrasonic waves emitted by the ultrasonic sensor penetrate through the floor slab, sound waves are reflected through the sound wave reflection base, then the thickness of the floor sla