Based on 501 questionnaires from the provinces of Guangdong and Jiangxi,the article uses gives an empirical test to the impact of non-agricultural employment experience and behavioral competence on the operating efficiency of new professional farmers by adopting a two-stage model of DEA-Tobit and an mediation effect model. The results show that the operating efficiency of the new type of professional farmers is on the low side,and there is plenty of room for improvement. The non-agricultural employment experience plays a significant role in promoting the operating efficiency of new professional farmers,in which the working experience and business experience has a positive impact on operating efficiency of new professional farmers. Non-agricultural employment experience helps to improve behavioral competence which plays the mediating role in the relationship of “non-agricultural experience and operating efficiency”. The effects of control variables (such as terrain features) pass the significance test. Therefore,workers with rich non-agricultural employment experience should be encouraged to take up employment in agriculture,and the differentiated cultivation policies have to be adopted for workers who have different employment experiences and are willing to engage in agriculture so as for the rural revitalization.