In the 16th- 18th century, Cochinchina had trade activities with many countries whose economics developed strongly such as Portugal, Netherlands, England, France... The commercial activities of the westerners in Cochinchina were rich and varied. They not only did bring a great profit for themselves but also make the trade Cochinchina more in eventful. The first time of Vietnamese history, when the contact between a traditionally agricultural feudal country and the Western civilization with a high science and technology level had clear, impacted on every aspect of political, economic, cultural of Cochinchina.