In ancient my country, there were frequent wars and rich experience in military struggles. The "Book of War" on military affairs is voluminous, such as Lin Chuishi, with extensive and profound content, magnificent and open-minded momentum, and occupies an important position in the vast ancient classics.Since the meaning of the word "bing" is relatively broad in ancient times, it has many meanings such as soldiers, army, military strategist, war, military, weapons, combat, and tactics. The argument is not unreasonable.For this reason, people call the books on various aspects of martial arts "books of war", so "Ci Hai" defines books of war as "the collective name of ancient Chinese military works".Like other social phenomena and things, art of war has not always existed, it is the product of social development to a certain class, and it has its own process of occurrence and development.