Wall surface grooving device for building construction

The utility model discloses a wall surface grooving device for building construction. The wall surface grooving device comprises a device main body, according to the grooving machine, waste residues can be blocked in the grooving process through the protective cover, and the situation that the waste residues splash and scatter everywhere to cause accidents or affect the operation environment is avoided; according to the device, waste residues in the protective cover can enter the collecting box through the residue discharging pipe, so that the weight of the protective cover is reduced, the protective cover can work better and stably, the sliding plate can extend into a cut groove by pushing the sliding plate, and the waste residues can be prevented from falling off through the cut groove; according to the dust removal device, the air extracting pump can extract dust in the protective cover through the first air pipe and convey the dust into the water tank through the second air pipe, the dust is adsorbed thro