The invention discloses a drilling device for hardware processing. The drilling device for hardware processing comprises a main body box, wherein an electric push rod is fixedly connected to the middle of the bottom wall in the main body box; a drilling machine body is placed in the main body box; the telescopic end of the electric push rod is fixedly connected to the bottom surface of the drilling machine body; and two symmetrically fixed blocks are fixedly connected to the inner side wall of the main body box, and the drilling machine body is located between the two fixed blocks. The drilling device for hardware processing disclosed by the invention drives the drilling machine body to adjust the height better by operation of the electric push rod, so that the height of the drilling machine body is better adjusted, and the lagging phenomenon in the adjusting process is avoided, and the stability of the device is improved. By means of a rotary rod matched with a threaded pipe, a threaded rod and a barrier plate in use, a to-be-drilled hardware material is better clamped and fixed by rotating the rotary rod, so that the problem that the hardware material moves and slides in drillingprocessing is solved, and the clamping property of the device to the hardware material is improved.