Value realization of ecosystem products refers to the processes of transferring ecological value of ecological products to economic benefits via rational development and utilization of ecosystem products while maintaining the stability and integrity of ecosystem. Mechanism of value realization of ecosystem products is an integrated system including policy, market and technological mechanisms that stabilize and facilitate the processes of realization of the value for ecological products. We proposed the concept of value realization rate of ecosystem products and provided method to assess it. It is defined that the ratio of the realized economical value of ecosystem products and the Gross Ecosystem Product (GEP) as the value realization rate of ecosystem products. The sum of economic value realized through various ways is called realized economical value of ecological products. Calculating the value realization rate of ecosystem products is pivotal for assessing the condition of value realization of ecosystem products. The results could reveal the operating efficiency of value realization mechanism, the weaknesses, and the potential for the development of ecosystem products value realization. we took Lishui City as the study area and calculated GEP of Lishui in 2019 and evaluated the value realization rate of ecosystem products. Based on the results, we assessed how the mechanism of value realization of ecosystem products had running in Lishui, as well as the obstacles it is facing and the accomplishments it reached in the relative area. Suggestions were made to improve the future work in the end. In 2019, GEP of Lishui was 411.021 billion yuan, the quantity of value realization of ecosystem products was 101.759 billion yuan, and the value realization rate of ecological products was 24.76%. Ecosystem products transferred the ecological value into economic value via marketization pattern and government compensations pattern in Lishui. 95.84% of the realized values of ecosystem product were contributed by marketization pattern while the other 4.16% was offered by government compensations pattern. Although marketization pattern shows a high efficiency of value realization, its weaknesses are perspicuous. The main obstacle appeals to be the immaturity of the market and market mechanism as well as the inapplicability to ecosystem regulating products. While government compensation pattern is applicable to all kinds of ecosystem products, the unsustainable fund source and small amount of funds become trouble for realizing the value of ecosystem products. To improve the weaknesses, we proposed that the stability and improvement of value realization of ecological products could be promoted by improving the trading market and the trading mechanism of ecological products, enriching the ecological compensation mode and funding resource, and establishing a completely industrial chain for ecological products that were lack of path to realize the value.