In order to maximize the Dianchi Lake Basin sewage interception effect, staggered peak storage technology of sewage interception trunk canal was discussed based on the prebuilt SWMM model of the drainage pipe network along the east coast and the rainfall data during 1995-2016. Different control modes were performed according to the rainwater channel liquid level: when the water level was lower than 6.76 meters, the typical pollutant concentration threshold control mode was performed; or else the liquid level - pollutant flux control mode as well as the typical pollutant threshold control were performed when the water level was higher than 6.76 meters. SS and TN were used as typical pollutant control indexes for trunk canal closure, and their control concentration thresholds were 125 mg/L and 5mg/L, respectively. Trunk canal pollutant collection under SS/TN concentration - load flux storage scheme was simulated under the rainfall of 0.5~1a recurrence period, the results showed that both storage schemes can effectively improve the pollutant collection rate, increase the sewer outlet pollutant concentration, and reduce the runoff impact on high water flow and low concentration of the sewage plant. The trunk canal pollutant interception efficiency was higher with the increase of recurrence period. However, pollutant collection under TN storage scheme was better than SS, so TN was chosen as the optimal control index for typical pollutant in trunk canal interception.