A study on influence of nitrogen on cabbage growth and nitrate accumulation was conducted by means of field experiments in Guanyu Soil. The results showed that nitrogen could increase growth and net yield rate of cabbage and nitrate accumulation in cabbage leaves. The nitrogen fertilizer application rate of 448.5 kg/hm² brought about the highest yield and the rate of 427.5 kg/hm² was the optimum for cabbage in double cropping. Nitrate content was higher in outer leaves than in inner leaves. The nitrate content in the inner leaves increased with the nitrogen application rate whilein the outer leaves it increased with the time of growth under a high nitrogen application rate. Nitrogen application increased significantly nitrate contents in all the layers in the profiler.