Based on the survey data attained from farmers in Tianchang, Anhui Province, this paper uses Tobit model to empirically analyze the influence of the grain subsidy policy on off-farm employment time. The results showed that: considering only a single grain subsidy policy variables in the case, the grain subsidy has negative impacts on off-farm employment time. Improving grain subsidies would reduce off-farm employment supply time and increase agricultural time. In the case of all the variables considered, the negative impact of the amount of food subsidies for off-farm employment time is not significant, which can be ascribed to the fact that families with well-educated children, or children serving as migrant workers, or more labor forces are less sensitive to food subsidies and the incentive of such kind contributes less to farmers' agricultural income. Considering all the variables or not, farmers' satisfaction to the ways of subsidies has significant negative effects on their non-agricultural employment time. More satisfied with the ways of subsidies, less time consumed on non-agricultural employment. Therefore, to give full play to the positive role of grain subsidy policy, we should further improve the amount of subsidies and the subsidy way to improve farmers' satisfaction.