Abstract: Through the replacement design of the soft foundation of the 1500m³ pool of the large-scale drinking water source project, the bearing capacity and deformation of the pool under the different conditions were calculated.Optimize the best combination parameters, and then strengthen the treatment. Combined with the technical specifications of foundation treatment, propose a treatment method to solve the weak foundation of small and medium-sized sluice pools. The results show that the economic benefits of soft foundation treatment under replacement and strong tamping method are good and meet the project. Quality and foundation bearing capacity requirements.