Abstract Boyi Biography in Shihchi is quite different from the common biographys. Sima Qian must express the connotation has four:First, to respect courtesy behavior ; Second, According to reliable material ; Third, the relationships between the natural and the human ; Fourth, Reveals the indistinct person. These four items are imitate Confucius to come. Obviously the writing of Boyi Biography,the concealment steals compared to Confucius .