This paper focuses on the measures of rainwater and sewage shunting in Chongqing Changshengqiao sanitary landfill. The catchment area of this landfill is totally about 331700 square meters. If the rainwater blends with the sewage, the processing load of the leachate will increase greatly. Thus, the measures of rainwater and sewage shunting must be taken during solid waste filling. In this paper, the authors firstly analyze the measures of rainwater collection and drainage and establish the guideline of pumping assisted by draining. Furthermore, according to the practical situation of landfill, a detailed plan is set down for rainwater and sewage shunting. The effect is quite evident after implementation of the plan for half a year. The processing load of the leachate has been reduced largely. It is proven that the shunting measures are feasible.