| Under open condition, a country or the local economy's development stems from the growth of the total quantity and the structure optimization. Internal economy and external economy also have effect on it. In internal economy, industrial scale and structure merits are the key factor for a country or region's economic and the level of development. In external economic, direct reflection of a country or a region's economic situation, industrial competitiveness and division ranking.This article take typical less advanced region Gansu Province as an example, from the perspective of the structure, the article discusses interactive relations and the trade structure, industrial structure and interaction mechanism. Then, we'll find trade patterns and implementation path of the less developed regions to catch up with and surpass the developed regional, thus expand and deepen trade and industry at the regional level of understanding of economic development. First of all, on the basis of previous studies, combs and deepens trade structure, the industrial structure and the reciprocity theory. It establishes the relatively complete system, make it a beneficial supplement of regional level.Second, the article discusses interaction relations, function mechanism and evolution tendency between the trade structure and industrial structure. The article analysis mainly on three aspects: the trade structure, the industrial structure and influencing factor, the trade structure and the industrial structure interaction relations, the trade structure and the industrial structure conduction mechanism.Third, take Gansu Province which is a typical western less advanced region as an example. On the basis of the judgment of the stage that industrial structure and the trade structure are. Using industrial structure optimization index, export trade structural index, import trade structural index, with the aid of VAR model and Granger causality test Causes and effects inspection method metering outfit. The real diagnosis analyzes the Gansu Province industrial structure and the trade structure reciprocity, then, gives the conclusion.Finally, on the basis of theories and empirical analysis, the article discusses the trade structure and the industrial structure interaction promotion and the optimum composition of less advanced region. Realizing the spanning development of strategy choice, pattern choice and path dependence, then the article gives corresponding strategies, advice and related coordinated sets of measures. |