Wall hollowing detection device based on building detection

The invention provides a wall hollowing detection device based on building detection. The wall hollowing detection device comprises a grip mechanism, the grip mechanism is of a hollow structure with a cuboid-shaped front end, a semi-cylindrical tail end and an arc-shaped rear front end, the left end in the grip mechanism is fixedly connected with the fixing mechanism, and the upper and lower surfaces of the rear end in the grip mechanism are fixedly clamped with the upper and lower surfaces of the ink storage mechanism respectively; the fixing mechanism is of a structure with a cuboid rear end and a cylindrical front end, and the front end is fixedly connected with the connecting mechanism in a clamped mode. The ink storage mechanism and the ink outlet pipe are arranged, hollowing detection is conducted through the knocking block, when hollowing sound appears, the grip mechanism is rotated by 90 degrees, the ink outlet pipe faces the hollowing position and knocks the hollowing position, the ink outlet pipe is