Abstract: Compared with the second-class wholesalers of agricultural produces circulation, the first- class wholesalers have larger scale and wider flow range, so they are the backbone of the inter provincial circulation of agricultural produces, and their operation efficiency directly affects the improvement of the circulation efficiency of the whole farm produces. This paper analyzes the technical efficiency and its influence factors of vegetable first-class wholesalers using stochastic frontier production function model based on the survey data of vegetable first-class wholesalers in Shouguang agricultural produces logistics park in Shandong Province. The results show that loss of efficiency of vegetable first-class wholesalers is significant in the process of vegetable wholesale. In terms of influence factors, these five variables have significant impact on the technical efficiency of wholesalers such as the main business decision-makers age, operating time in the park, the proportion of fixed customer purchasing volume accounted for the total wholesale, the proportion of the total amount of the acquisition of the fixed collector accounted for its total acquisition, whether a vegetable wholesaler has its own planting base or not. While varieties and quantity of the vegetable wholesale every time,whether invest in large transport vehicles or not, the educational level of decision makers, the experience of first-class wholesalers, working years and other factors have no significant impact on the technical efficiency of wholesalers. According to the above research conclusions, there is about 26.5% improvement in the technical efficiency of vegetable wholesalers, while the accumulation of vegetable wholesale experience，maintaining a stable relationship with upstream and downstream customers，and implementation of the forward integration development will help to improve their technical efficiency.

Key words: vegetable, first-class wholesalers, technical efficiency, SFA, influence factor