On the basis of physiological characteristics of early rice and the research results of predecessors, the suitability models about temperature, precipitation and sunshine of early rice are constructed. In order to express synergetic effect of meteorological factors and yield, climatic suitability model of early rice is established. According to different periods of climate suitability of early rice, the climatic suitability index of early rice is constructed by using weighted method. Based on the relation between climatic suitability index and early rice yield, a climatic suitability indicator is set up. And dynamical prediction models of early rice are created by using climatic suitability index at different stages and early rice yield. The results indicate that the method has high prediction accuracy of the bumper or poor harvest trend and the actual yield on both model test and forecasting test and can satisfy the needs of operational services.