Based on survey data of 519 vegetable farmers in suburban Wuhan city,this paper analyzes the external factors and their prominences affecting the farmers’ satisfaction.of purchasing seeds.The result shows that eight factors affect farmers’ purchasing seed behavior:market organization,seed quality,other people’s vegetable planting experience,market intermediary factor,propaganda,vegetable price,service,trust and so on.Seed quality,trust factor,vegetable price,propaganda factor have a positive effect on farmer’s satisfaction,while other people’s vegetable planting experience factor,market intermediary factor,dealer services have a significant negative effect,and the market organization has no significant effect.This paper finally proposes several suggestions,firstly,the state should further establish and perfect the warning system for vegetable prices and planting areas;secondly,full play to the role of the vegetable cooperatives should be given; thirdly,vegetable breeding institutions should further define the priority order of vegetable breeding and finally,seed dealers should establish their credibility images.