A distribution box door plate comprises a door plate body (1), the door plate body (1) is provided with a plurality of observation windows, glass panels (2) are installed on the observation windows in an embedded mode, rubber seal rings (3) preventing rainwater from entering the door plate through the edges of the glass panels (2) are installed at the positions, located at the edges of the observation windows, of the surface wall and the inner wall of the door plate body (1) and a metal mesh enclosure (4) covering and protecting the glass panels (2) is further installed on the surface wall of the door plate body (1); lateral bent sides (1.1) which firstly face the inside from the outside perpendicularly, then face the center from the outside perpendicularly and at last face the outside from the inside perpendicularly are formed at the left edge of the door plate body (1) and the right edge of the door plate body (1) respectively, wherein the edges of the lateral bent sides (1.1) extend to the inner wall of the door plate body; upper and lower bent sides (1.2) which firstly face the inside from the outside perpendicularly, then face the center from the outside perpendicularly and at last face the inside from the outside perpendicularly are formed at the upper edge of the door plate body (1) and the lower edge of the door plate body (1) respectively. The distribution box door plate enables the glass panels to be effectively protected and the overall strength is applicable to outdoor distribution boxes.