The GR3 model has a simple structure with only three parameters which can be automatically optimized. The model was developed in Europe, Africa, and South America. In order to verify its applicability in China, the GR3 model was compared with the Xin’anjiang model in the seven representative watersheds situated in the river basins of Yangtze, Huaihe, Yellow and Songhuajiang where the Xin’anjiang Model is recognized applicable. The comparison concludes that the GR3 model is compa rable to the Xin’anjiang model in terms of the model efficiency, water balance and correlation, and has the same applicability in China.