Non-point source pollution in the Fuxianfu Lake catchment,Yunnan has been the main cause of eutrophication of the Fuxianfu Lake.Leaching loss of nutrients from the soil is not only one of the most important agricultural problems,but also the main factor causing nitrogen and phosphorus pollution of the water environment.Four soil columns sampled in the region were used in the laboratory experiment,which was designed to have four different rainfall intensities,to investigate migration and leaching loss of nutrients. Based on the obtained experimental data,characteristics of migration of total nitrogen,total phosphorus,nitrate-N and ammonia-N were analyzed,and cumulative leaching losses were calculated. Results show that nitrate-N moves relatively easily with water movement in the soil profile while ammonia-N can hardly do. A natural logarithm relationship was found existing between cumulative rainfall amount and cumulative leaching losses of nutrients in all the experimental conditions. Leaching loss of total nitrogen was mainly affected by rainfall intensity,while leaching loss of total phosphorus was not significantly related to rainfall intensity. The findings of this paper may help explore distribution and migration of nutrients in agricultural lands,and mechanism of agricultural activities polluting groundwater.