The author draws a conclusion by studying the information about HuYinglin's writing "ShiSou":The order of writing "ShiSou" may be Nei chapter, Wai chapter, Za chapter, and Xu chapter. There were different editions about the Nei chapter and Wai chapters, three chapters, and four chapters. Nei chapter of "ShiSou" was finished in 1587, Wai chapter finished in 1587 or earlier, Za chapter finished no later than 1590, and Xu chapter finished after 1590. HuYinglin propably began to write "ShiSou" in 1584.