Use extended Theory of Planned Behavior（TPB） to analyze the possible impact of farmers’ willingness to transfer-out farmland, and then use 526 survey data from 10 cities（counties） in Jilin Province to conduct empirical tests based on factor analysis and multivariate linear regression analysis. The results show that the behavior attitude,subjective norm, perceptual behavior control, social trust, transfer object trust and government trust all have significant positive influence on the farmer’s farmland transfer-out willingness. The improvement of farmers’ social trust,transfer object trust and government trust will help to improve their willingness to transfer farmland. Increase the publicity of the national farmland transfer policy, widen the margins of the rural social network, strengthen the construction of the rural credit system, the government’s service and guarantee of farmland transfer can effectively improve farmers’ willingness to transfer farmland.