In the process of removing the jacket platform with the internal cutting method, the pile leg needs to be dredged. The dredging pump is the key equipment of the dredging system in the pile leg, and its performance directly determines the work efficiency of the dredging system. The performance of dredging pumps is comprehensively evaluated based on entropy weight–fuzzy analytic hierarchy process to obtain the optimal configuration scheme of dredging pumps in the dredging system. A mathematical model for evaluating the performance index of dredging pumps was established, and the most preferred scheme was obtained from five dredging pumps with similar performance. The research results show that the NSQ100-60-45 dredging pump has the largest comprehensive evaluation weight, and its performance is more suitable for mud pumping operations in the legs. The performance evaluation model in this study is highly reliable and can give guidance to the type selection of dredging pumps in the dredging system.