Wet type self-feeding drilling machine for building construction

The utility model relates to the technical field of building construction. The utility model discloses a wet type self-feeding drilling machine for building construction. The drilling machine body adopts a hollow rotating shaft as a power output shaft connected with a drilling barrel. A positioning guide rod penetrates through the hollow rotating shaft and the drilling barrel, a fixing mechanism is coaxially arranged at the front end of the positioning guide rod, a water flow channel is formed in the positioning guide rod, a water outlet hole is formed in the side wall of the front end of thepositioning guide rod, a water supply pipe connector is arranged at the rear end of the positioning guide rod, and a self-feeding mechanism is arranged between the rear end of the positioning guide rod and the drilling machine body. The positioning guide rod is fixed in the center of a to-be-drilled part; according to the wall drilling machine, damage to a wall on the peripheral side of a to-be-drilled part is avoided, wa