Abstract: Now the highly used of nitrogenous fertilizer in our country makes a relatively serious problem of environment. Nitrogen is the most important nutrition element of crops, and the root is the major organ of rice to absorb nutrient. A lot of studies show that the efficient absorption of nitrogen by crops depends on the biology feature of root. So studying the relationship of rice root and the nitrogen’s absorption and using makes sense for raising the utilization rate of nitrogenous fertilizer and alleviating the pollution of environmental. The paper summarizes recent progress in study on rice root related to nitrogen uptake and utilization, and compares some methods about research of root morphology and activity. The relation of nitrogen nutrition and root morphology, activity is discussed in rice.