The invention discloses a candlelight door magnetic building block. The building block comprises a candlelight door base and a candlelight door cover which are fixed into a whole. The candlelight door base comprises a base plate, wherein protruding outwards-protruding ribs are arranged at the edge, facing the side surface of the candlelight door cover, of the base plate, first stop ribs are arranged at the positions, corresponding to the ends of cross beams and the bottoms of stand columns, of the inner sides of the outwards-protruding ribs, and the first stop ribs are lower than the outwards-protruding ribs. The candlelight door cover comprises a cover plate, wherein second stop ribs corresponding to the first stop ribs are arranged on the side surface, corresponding to the base plate, of the cover plate. According to the candlelight door magnetic building block, magnets are arranged at the ends of the cross beams and the bottoms of the stand columns, and the first stop ribs and the second stop ribs are matched with the outwards-protruding ribs to form side walls of containing grooves for containing the magnets. The problems concerning distribution and installation of the magnets in an existing candlelight door magnetic building block are solved, and effective attraction with other magnetic building blocks can be realized.