Fine evaluation of gross forest ecosystem product on small scale can reveal the differences in ecological service values between different forest ecosystems, which is beneficial for the value transformation of forest ecological products in specific areas. This study takes Siqian She Ethnic Town, Taishun County, Wenzhou City, Zhejiang Province as a pilot area. Based on the accounting framework and indicator system of the "Technical Specification for Gross Ecosystem Product (GEP) Accounting of Terrestrial Ecosystems" standard in Zhejiang Province, it proposes accounting methods for water conservation, soil conservation, flood regulation, climate regulation, carbon sequestration and oxygen release at the scale of forest stand sub classes. A multi department joint data collection mechanism is constructed, and a forest resource map, meteorological, air quality, water quality monitoring data, and other data are collected. Based on GIS technology, forest stand sub classes are used as accounting spatial units to evaluate the value of forest ecological products using forest stand information. The results show that the total value of forest ecological products in Siqian She Ethnic Town in 2021 was 3.658 billion yuan, with an average value of 208600 yuan/hm². The value of ecosystem regulation services is the highest, accounting for 97.6% of the total value, while the value of supply products and cultural services is relatively low. The value of ecological products is manifested as climate regulation > soil conservation > flood regulation and storage > water source conservation > direct supply products > carbon sequestration and oxygen release > ecotourism > water environment purification > air purification. The evaluation results show that Siqian She Ethnic Town boasts a significant quantity and quality of forest ecological products, along with substantial ecological service value. These findings offer a solid foundation for local governments to implement ecological compensation measures and advance the ‘two mountains' transformation strategy.