A household multifunctional desk lamp, the built-in projection lamp can project six different chessboards, and the base has a suction cup that makes it difficult to move and can absorb different positions, which is suitable for different use scenarios. The projected chessboard can be used for the family entertainment of chess, especially for families with small babies. It can also teach children to know many kinds of chess. The product is also suitable for uncle and aunt who specially look for street lamps to play chess on summer nights. It can also be used as flashlight lighting on the way home.