The utility model discloses a building electrical automation wall embedded distribution box. The power distribution box comprises an embedded part and a power distribution box body arranged in the embedded part, a plurality of radiators are arranged on the inner wall of the embedded part; the radiator is connected with the distribution box body through a radiating pipeline; a plurality of damping springs are arranged between the radiator and the distribution box body. Two clamping columns are fixed on the inner wall of the embedded part; a retaining ring is arranged on the clamping column; the retaining ring is matched with the limiting rod; the limiting rod penetrates through the limiting frame to be connected with a pull plate arranged in the limiting frame, pull rings are fixed to the pull plate, the two ends of the connecting rope are connected with the two pull rings respectively after the connecting rope is wound around the reel, the two ends of the reel are movably connected with the inner wall of the limiting frame through pin shafts, and a plurality of reset springs are further arranged between the pull plate and the inner wall of the limiting frame. According to the embodiment, the heat dissipation speed of the distribution box is increased, the vibration of the distribution box in use is reduced, the distribution box is convenient to repair and maintain, and the distribution box is simple and ingenious in structure, convenient to use and easy to popularize.