Abstract: Taking the wetland resource data of Yuxi city in 2019 as the research object,nine secondary indicators are determined by using the evaluation methods of market value method, shadow engineering method and alternative cost method to evaluate the value of various service functions in Yuxi city.The results show as follows. (1) The total value of wetland ecosystem services in Yuxi city is 8.50×10¹⁰ yuan. Among them, the regulating service value(4.23×10¹⁰yuan) accounts for 49.77% of the total value; the value of cultural services (3.78×10¹⁰yuan) accounts for 44.41% of the total value; the value of supporting services (4.87×10⁹yuan) accounts for 5.72% of the total value;the value of provisioning services (8.49×10⁷yuan) accounts for 0.10% of the total value.(2) Among the nine districts and counties of Yuxi city, Chengjiang city has the highest ecosystem service value (3.14×10¹⁰yuan),accounting for36.93% of the total value; the second is Jiangchuan District, with a value of 2.27×10¹⁰, accounting for 26.70% of the total value; the third is Tonghai County, with a value of 8.97×10⁹yuan, accounting for 10.55% of the total value; the value of Eshan county is the lowest (1.53×10⁹yuan), accounting for only 1.8% of the total value. The research shows that the value of wetland ecosystem service function in Yuxi city is huge, which plays both economic and ecological benefits, especially Chengjiang city, Jiangchuan district and Tonghai county.