Abstract: Through the analysis of the data of agricultural land transfer rate, comprehensive agricultural mechanization level and per capita disposable income of farmers’ families in different provinces from 2005 to 2019, the relationship between circulation of agricultural land, agricultural mechanization level and farmers’ income was examined from the macro level, and the intermediary effect mechanism was tested. At the same time, the whole country was divided into three regions： East, west and central for sub-sample regression. The results showed that from a general point of view, accelerating the circulation of agricultural land could not only significantly promote the increase of farmers’ income, but also improve the level of agricultural mechanization; the improvement of the level of agricultural mechanization could not only directly promote the increase of peasant income, but also as an intermediary variable between circulation of agricultural land and peasant income, bring about an indirect increase in peasant income. From the perspective of sub-samples, the circulation of agricultural land in different regions of the east, west and central regions all could promote the improvement of farmers’ income. The level of agricultural mechanization was positively correlated with farmers’ income, and the partial mediating effect of agricultural mechanization level was almost valid. However, the effects of circulation of agricultural land on farmers’ income and the promotion effect of agricultural mechanization on farmers’ income in the western region were significantly higher than those in the other two regions.

Key words: circulation of agricultural land, agricultural mechanization level, farmer income, intermediary effect