Taking hillside orchards in Huairou district as the experimental plot, PAM and SAP were selected to apply for controlling manure pollution in this orchard. The antifouling effect of PAM on sloping field was tested by artificial rainfall experiment, and the outdoor monitoring experiment was carried out from 2010 to 2011. After applying the proposed technology, soil erosion and nutrient runoff in soil slope, also the soil water content and nutrient migration in soil profile were discussed. The results showed that PAM could reduce event mean concentration and pollution emission load of individual rainfall by 5%~8% and 16%~22%, respectively. PM treatment is the best in this experiment. Compared with control treatment PS0, chemical antifouling treatments PS1 and PS2 could promote the water content of soil root layer by 10.4% and 23.7%, increase nutrient content by 3.8% and 22.3%，reduce sediment in slope runoff by 30.7% and 61.7%，and reduce nitrate nitrogen content in slope runoff by 14.7% and 30.7%, respectively.