Based on the investigation on the situation of implementing the urban sci-tech specials system in Yangcheng County, Shanxi Province, this paper sums up the successful experiences in the construction of the urban sci-tech specials system, and in the light of the problems existing in the current work, puts forward some work points in the future.

As new things,however,the management mechanism of science and technology correspondent needs to further improve and innovate.

The ag-technician is a key factor for the development of Chinese rural area.

Technical Envoy system focuses on innovation of conception,institution and mechanism of rural technical system,wihch contributes to overcome the problems of existing operation and managecent of rural technical research and extension.

Technical envoy system fully mobilizes the participation of technical personnel in theagricultural industrialization development by using market mechanisms and through innovation ofinstitution and mechanisms.

From the benefits relationship in the technical envoy systems, combined with the process of technical envoy systems in Changji, the article establishes a scientific and feasible technical envoy systems performance evaluation model, with a research method called improved entropy method.

Analysis of vitality of the system of special commissioners in science and technology;

The formation, operation and effects of the system of special commissioners in science and technology are discussed profoundly, its trend in future is analyzed and the countermeasures for its innovation, perfection and enhancement are proposed.