The invention discloses an equidistant high-efficiency drilling device for building timber, comprising a bottom plate, a left side plate is fixed on the upper left part of the bottom plate, a right side plate is fixed on the upper right part of the bottom plate, a workbench is arranged above the bottom plate, and the workbench and the bottom plate Sliding connection, a power mechanism is provided under the worktable, clamping devices are provided on both sides of the upper part of the worktable, a mounting plate is slidably connected between the left side plate and the right side plate, and a second motor is fixed in the middle of the bottom of the mounting plate. The second motor drives and connects the drill bit, and a dust-absorbing device is installed on the mounting plate. The present invention is provided with a power mechanism, which includes a first electric push rod, a first motor, an active dial, a driven sheave, a gear, a rack and The disc, through the cooperation of the above components, realizes equidistant drilling, high drilling efficiency, equipped with a clamping device, which can clamp or loosen the board, easy to operate, reliable clamping, equipped with a vacuum device to avoid dust in the working area Scattered, the working environment is extremely poor, affecting the health of the staff.