The hydrodynamic numerical model of the Yihe River was established based on MIKE 11 software, and the model was verified by using the measured data. Six rubber dams along the Yihe River and the Benghe River were selected, among which the discharge process of each single rubber dam was calculated first and then the joint application of rubber dams was studied according to the scheduling principle of the dam group. The results show that in the condition of 4 hours collapsing time for all the dams, the peak discharge downstream the Linyi section is 1.427 m3/s and the peak discharge of the Xiaobudong rubber dam is 1.414 m3/s. The increase of discharge is less than 1% after the operation of rubber dam group. The scheme of dam collapse is put forward under the flood condition in 2022, in which the flood forecasting time upstream the Linyi section is longer than 8.95 hours. The proposed dam collapse scheme can store the water in advance and the peak flow discharge is not increased.