"Sima Law" is one of the ancient Chinese art of war. About a book in the early Warring States Period. According to the "Records of the Historian Sima Rang Ju Biography" reads: "The king of Qi (BC 356- 320 years ago) enables the doctor to recover the Ancient Art of War by Sima Rang Ju and attached therein, because Xiao Yue" Sima Rangju art of war. "" "Sima law" has been spread over two thousand years, Wang Yi many, now only five remaining. But in the remaining five, and is also recorded from the Yin and Zhou to Spring and Autumn Period, some ancient warfare principles and methods of the Warring States period of our study of military thinking that period, provides important information.