Kang Tung worked as chief justice of the Supreme Court from 1914 till 1918, chief justice of the Prize Court from 1917 till 1918.
In 1918 he became president of the law codification bureau and then re-appointed chief justice of the Supreme Court in 1920.
In 1921 he took a post of minister of Justice and in 1922 president of the commission for the consolidation of domestic and foreign debts.
Mr. Tung acted Minister of Finance and concurrently Director-General of the Salt Administration and of the Wine and Tobacco Administration in 1922 and vice-president of the commission on the abolition of extraterritoriality from 1923 till 1926.
Kang Tung was engaged in legal practice in Shanghai, China and concurrently serving as professor of law in the Comparative Law School, since 1927. For several years, he was director of the Institute for the Training of Judicial Officials at Nanking, China.