This article sets the year of 2006 as an example, from micro perspectives to analyse the cost of trade for China;from the theory of international trade to analyse the trade benefit distributions, and then analysing different statistic methods between China and America.

The trade effect on FDI should be analyzed from industry value chain,trade structure and trade benefit synthetically.

On the key Position of the Concept of "Trade Profit"in the Subject of International Trade;

Only recognize our comparison advantage correctly, take reasonable economy and trade development strategy, can we fully take the advantage of our comparison advantage, enhance our international competition ability, and gain more trade profit.

With the development of Intra-product Specialization, the traditional standards have been difficult to accurately and objectively represent the distribution of Trade Profit; on the contrary, Attachment Value may carry on an objective, science appraisal to the gains of International Trade.

A New Framework of Analyzing Gains from Trade in Consideration of Risks;

The effects of various trade standards on gains from trade in international trade are twofold, including both favorable and unfavorable sides.

The analysis of the relationship between terms of trade and gains from trade sho ws that deteriorating terms of trade does not necessarily result in loss of gain s from trade.