The paper conducts partition and comparison of pollution load within the basin during 1991 ~ 1999 period by taking shaanxi section of weihe river basin as an example and using separation method of hydrograph and rainfall differential technique respectively 以渭河流域陕西段为实例,分别运用径流分割法、降雨量差值法对流域内1991 ~ 1999年污染负荷进行了分割,并进行相互比较。