Because of each other’s different benefits and needs, two country’s tributary trade was founded and developed.

In the Ming dynasty, tributary trade constituted the focus of the Sino Japanese relation.

In the abroad trade of Ming dynasty, the private is another form except tributary trade.

During the Hongwu Period in the Ming Dynasty,the official trade between China and Korea was divided into tribute trade and mutual trade.

This article analyzes the role in its tribute trade and nongovernmental trade and the causes of the transformation of the two kinds of trade.

：Tribute trade is a special diplomatic policy which including politics and economy.

This paper compares western capitalism international trade system and China\'s tributary trade system from fifteenth to eighteenth century.

The tributary system was the main pattern of Sino-foreign relations in ancient China, and it originated from the Pre-Ch in Period.

The tributary system is one of the main Patterns in Sino-foreign relations in ancient China.

“Tributary system”was the traditional foreign policy in ancient China, which carried out the diplomatic strategy to build the mutual benefice and make friends with neighbor countries each other.

The core of overseas policies of the early Ming Imperial Court mirrored in the period of Zheng He s expeditions are the tribute system and the ban on maritime trade or relations with foreign countries.