Abstract: The evaluation index system of farmland water conservancy facilities’ supply level was constructed in this paper, and the factor analysis method was adopted to evaluate the supply level. The min-max standardization process was then used to standardize the supply level and farmers’ satisfaction for 180 villages investigated, the values were taken between 0 and 1, and then the mean values of the two were taken to characterize the supply performance of farmland water conservancy facilities. Finally, the hierarchical linear model was used to investigate the effect of influencing factors on farmland water conservancy facilities’ supply performance from village level and farmer level, and analyze the way of influencing factors to affect irrigation facilities’ supply performance, especially the farmers’ agricultural income differences. Research shows that farmland water conservancy facilities’ supply level in China is below the international average level, farmers’ satisfaction of farmland water conservancy facilities has not reached rational expectations, and there is still great room for the farmland water conservancy facilities’ supply performance to improve. The empirical analysis of the zero model suggests that there are differences in the supply performance of farmland water conservancy facilities between different villages, and the factors of villages and farmers affect the supply performance of farmland water conservancy facilities jointly, 48.8% caused by the factors of villages. Random intercept model was used to analyze the influence degree and direction of factors of villages and farmers. From the factors of villages, the number of motor-pumped wells, the length of channel and the collection rate of water fee have a significant positive effect on farmland water conservancy facilities’ supply performance. The effect of agricultural income difference is significant at 5% level, and presents an inverted U-shaped relationship, and the distance away from the county doesn’t have a significant influence on the farmland water conservancy facilities’ supply performance. From the factors of farmers, the attention given by the government, the management of farmland water conservancy facilities, the changes of farmland water conservancy facilities in recent 5 years, comparison situation with nearby villages, convenience of irrigation and the satisfied degree to requirement of farmers have a significant positive influence on the supply performance of farmland water conservancy facilities; whether children attend school has a significant negative influence on the supply performance of farmland water conservancy facilities. Age, gender, education level, whether or not to be village cadres, the maintenance of farmland water conservancy facilities, supply mode and evaluation of water price don’t have a significant influence on the supply performance of farmland water conservancy facilities. Using 3 different methods to measure farmers’ income difference, the relationship between farmers’ income difference and farmland water conservancy facilities’ supply performance is consistent. Under the condition of no change of the direction and significance of the other variables, farmers’ income differences measured by 3 indicators all keep an inverted U-shaped relationship with farmland water conservancy facilities’ supply performance. This study can provide a reference for promoting the improvement of farmland water conservancy facilities’ supply performance.