This article thinks the original author of dream of the red chamber is Cao Shuo,Cao Xueqin’s second elder uncle,The manuscript reached the highest level of the world literature works after adding and deleting by Cao xueqin,so Cao was the more greater author,he was the son of Cao Fu,born in the middle of May,1723,died in the spring of 1764,three people were the commentators:"Zhi YanZhai"was CaoYan,Cao xueqin’s third elder uncle,"JiHuSou"was Cao Fu,CaoXueQin’s father,"Song Zhai","MeiXi","Chang Cun"all was Cao Tangcun Cao Xueqin’s younger brother.