This water-resistant gypsum board are made of desulfurized gypsum powder as raw materials, with the advantages of health, environmental friendly. Water-resistant paper as the facing paper, and proper water-resistant materials added inside the board, this help the board showing a good characteristic of waterproof. The board is widely used for inner wall, ceiling, partition and making some special fashioning. The performance of gypsum board are: Water-resistant, sound insulation, heat resistance, light weight, high intension, besides, it is easy to apply, which can be nailed, sawed and digged.