Transactions on Machine Design Gong-xue HUANG 8 1 2020 http://www.dline.info/tmd/fulltext/v8n1/tmdv8n1_2.pdf This study had chose the half water gypsum board and diatomite as the main raw material, and added lime and mullite fiber preparation of ordinary gypsum board; and chose the capric acid and dodecanoic acid as phrase change materials, then mixed both based on a certain mass weight ratio, then chose plaster board carrier, and made phase change energy-storing gypsum board by impregnation method; Finally, this study analyzed and discussed the quality of the relationship between prepared phase change energy-storing gypsum board and the dipping time, the content of phase change material in phase change energy-storing gypsum board, the durability and water-absorption performance of phase change energy-storing gypsum board, etc.