For the case study of Luoma Lake, based on the analysis of the data from literatures, the main values of the ecosystem services in the wetland of Luoma Lake are evaluated by using the methods of the alternative market value, market value, shadow engineering and proportional conversion, which includes the ecological functions of material production, atmosphere regulation, water storage, water adjustment, water quality purification, habitats, leisure and entertainment and scientific researches. The results show that the total values of ecological services of the wetland in Luoma Lake are 1. 79 billion Yuan per year, and those of the water storage function are the largest and are 33. 74% of the total values, which is the core of the ecological services in the wetland of Luoma Lake. However, the values of the water purification function are the lowest, accounting for only 0. 84% of the total values, which reflects the vulnerability of the ecosystem in Luoma Lake. The local authorities should attach importance to the protection of wetland ecosystem in Luoma Lake, especially the strict control of sewage discharge.