This study is initially interpreted through the title of Wen-shih t’ung-I, which is Zhang Xue-cheng’s famous representative work, and then further explores and discusses the grand principle existing in the book. In this study, the “tung” of Wen-shih T’ung-I indicates vertical and horizontal, both of which integrate into a whole, thus a systematic and integrated history would be generated from its complicated historical events which display themselves spontaneously. A professional historian should keep this in mind. “T’ung” is also a verb; “T’ung i” can be interpreted as “to comprehended the spirit of hisotry”. The purpose for Zhang Xue-cheng to write the book through this notion is revealed. By studying the text, Zhang Xue-cheng’s emphasis on the meanings of history is understood to follow Confucius’s footsteps, who holds “the disciplines between the university and people shall be obeyed to illuminate truth” as his central idea to complete Spring and Autun; also, Zhang expected the terminal target and the highest principle of Wen-shih T’ung-i are to make the world regulative and to cultivate people