Abstract:The green smut of rice happenes both in native and abroad. The harmfulness is becoming more serious. It reduces the output and quality of rice, and is toxicity if people or animals eat much of it. For the aim of high yield, good quality, low toxicity and low cost, the best way to solve the damage of green smut of rice is to select and use disease resistant cultivars. The identifying, selecting and using method of disease resistant cultivars is discussed