Abstract: Small-scale farmland water conservancy is responsible for farm irrigation and drainage function, providing basic protection for the grain production in major grain producing areas. Guiding farmers to participate in Water Users Association is an important way of improving the operation efficiency of small-scale farmland and water conservancy facilities. In order to study the influence of Farmer Participatory Irrigation Association will specific factors, this paper adopted the Logistic model analysis method, studied Jiangxi commissariat advocate produce area 5 counties (city) 602 farmer households' participation of water users association behavior factors. The result showed that, farmer’s age, cultural degree, labor force, farmland fragmentation degree, water association founding time, water user association scale as well as Water Association established whether for farmer opinion had significant positive correlation on whether farmers participating in the Water User Association. And the paddy planting crop choice was significantly negative correlation. Finally, the paper put forward the corresponding policy suggestions.