This study analyzes the influence mechanism of migration on farmers' forestland transfer behavior by using instrumental variable-Probit and instrumental variable-Tobit models based on survey data of 505 households in 50 villages in 10 sample counties in Jiangxi Province. The results show that the farmers' willingness to transfer forestland is generally not high, but there is a great difference in the influence of intra-county migration and outside-of-county migration on the transfer behavior of farmers. Outside-ofcounty migration promotes the renting out of forestland and inhibits renting it in, whereas intracounty migration does not affect either. In addition, households' human capital, forestland resource endowments, policy systems, and locational environment factors all have different degrees of influence on farmers' transfer behavior. According to the analysis, improving rural laborers' job skills through training can deepen the reform of collective forestland.