Since the middle of 16th century, by the religious propagation and commercial ways, the French language had came to Vietnam firstly with French and Portuguese priests and business man. With historical process, the french language had penetrated, even by force or by dispose, in to Vietnamese people's life. Especially in around 100 years being French colony of Vietnam, the French language had played a role fairly important in Vietnamese language and culture. Up to present time, many French words are still used by Vietnamese people and can be found in Vietnamese Dictionary. Thus, beside of the Chinese, it is possibly that the French language has a strong influence to the Vietnamese language and culture. Hopefully this report can bring some more informations about the development of French language in Vietnam from the beginning up to the end of French domination.