Zhu Dexi was born into a wealthy family of senior officials in the Ministry of Finance in Nanjing that was of Suzhounese descent.
[citation needed] In 1939, with a good foundation in math and English, he was admitted to the National Southwestern Associated University at first in the physics department, but a year later transferred to the Chinese department where he was taught by Tang Lan, Wen Yiduo, Chen Mengjia, and Luo Changpei.
[citation needed] After graduation, he began teaching at l'Université Franco-chinoise de Kunming (Chinese: 昆明中法大学) in 1945 and joined the China Democratic League.
[citation needed] In 1989, he was invited to the United States, where he taught until he died of cancer at the hospital of Stanford University in July, 1992.
[clarification needed] He is noted for promoting Chinese culture abroad and was invited to lecture in Bulgaria, America, France, Hong Kong, Thailand, and Singapore.