Studying in Japan to study legal history in his early years. He has also been a visiting scholar in the United States, France and other countries. He was hired as a professor by Tsinghua University, Shanghai University and other universities. He has served as director of the Chinese Society of Legal History and director of the Oriental Legal Culture Research Center. Member of the Chinese Society of Legal History.
In order to collect books, I traveled all over the country, both sides of the Yellow River. The library is called "Believe me to be a vegetarian" and has more than 50,000 books. There are only 30,000 legal books, more than before the Republic of China. There are many rare books, rare books and rare books. Song and Yuan Edition 10 Yu Ben, Ming Edition 500 Yu Ben, Qing Edition 2000 Yu Ben. Among them, Zheng's version of Dan Ju Draft is an orphan of China, which is precious. Seal-cutting Zhenguan dignitaries in the Ming Dynasty, printing and overprinting longbow sketches in the Ming Dynasty, Guang Chuan's Postscript in the Ming Dynasty, Tian Shizhai's copy of Lai's Reminder of Entering the Palace in the Ming Dynasty, Dr. Pan's manuscript in imperial academy during the Wanli period of the Ming Dynasty, Collected Works of Jingchutang, and hand-painted color picture manuscripts known as "the first bibliophile in Jiangbei" in the late Ming Dynasty and early Qing Dynasty.
He is the author of 39 kinds of Beijing Urban Management and Modern Municipal Regulations in the Late Qing Dynasty.
1993, Tian Tao said that ancient books were published by international cultural publishing companies. The Collection of Tencang Contract Documents was published by Zhonghua Book Company 200 1. The contract documents received began in the sixth year of Yongle in the Ming Dynasty (1408) and ended in 1969, which lasted more than 500 years. It starts from Heilongjiang and Inner Mongolia in the north, Yunnan and Sichuan in the south, Shandong and Zhejiang in the east and Gansu and Qinghai in the west.
It covers various civil acts such as buying and selling, leasing, pawning, lending, partnership, will, marriage, and various documents and tickets. It is a valuable material for studying civil behavior and related administrative management since Ming and Qing Dynasties.
There are Selected Short Stories by Tian Tao, Case Study of Criminal Enlightenment in the Early Ming Dynasty, Bibliography of Ancient Chinese Law Books Collected by Dharma, Bibliography of Tibetan and Chinese Ancient Books of Sinology Institute of French College, Backup Bibliography of China Legal History of Sinology Library of UCLA, Bibliography of French College, etc.