The county is the essential administrative unit of our country, and it is an important task in the improvement of the ecological civilization system of our country to establish an effectiveness evaluation method of ecological protection in the county area. Gross ecosystem product (GEP) is defined as total values of ecosystem products and services for human welfare and sustainable development. The county-scale GEP accounting can objectively reflect the county's ecological system status and the effectiveness of ecological protection. Using the provincial ecological civilized county, Eshan County, as an example, we built an accounting index system and method for the county's GEP, increased Eshan County's GEP accounting, and analyzed the county GEP's constitution and trend. The results showed that:(1) ecosystem products and services in Eshan County could be divided into 3 categories, provisioning services, regulating services, and cultural services and 15 sub-categories. (2) In 2015, The GEP of Eshan County was 15.842 billion yuan. Climate regulation and water retention are the main ecosystem services, the sum of which accounted for 62.02% of the GEP of the year. (3) Since 2000, Eshan County's GEP significantly increased. Eliminating the price factor, the GEP increased by 25.04%. Specifically, the value of the product delivery service and cultural service increased significantly by 236.25% and 3004.06%, respectively. The value of regulating services rose steadily, increasing by 1.30%. The present study showed that the existing environmental monitoring data, and economic and social statistics can basically support the accounting of a county's GEP. Furthermore, the changes in a county GEP could reflect the effect of ecosystem protection, and provide the basis for improving the performance appraisal system.