Abstract: Constructing agricultural innovation system was an effective way to developed modern agriculture and realized agricultural innovation. Using the innovation system theory as the core, the construction of the innovation system structure framework was completed, and based on the researched results of agricultural enterprises and farmers of vegetable industrial cluster in Jiayu county, an empirical study on the above innovation system structure through the social network analysis method was conducted. The results showed that the structure of knowledge network was multi-core and had high density and concentration. Compared with the agro-area manufacturing cluster, agricultural innovation had a greater dependence on the market demand and the peers in the field, and needed to cooperate actively with scientific research units and universities.

Key words: regional brand building, agricultural innovation system structure, impact