The services of the Guangdong forest ecosystem bring a great direct and indirect economic value to the Guangdong Province. Based on Mr. Costanza and his colleagues' work results,using the PVM together with the VAM method, we evaluated the value of the forest ecosystem services of Guangdong Province on the basis of the data of the Guangdong Province's Forestry Investigation in 1999. The results show that in 1999 the total value of the province's forest ecosystem services is 37.4 billion RMB. The value of the economic forest is only 0.593 billion RMB which is only 1.58% of the total value of the forest ecosystem services in Guangdong Province. Among the 12 vegetation types that are under investigation, the pine, with the total value of 10.1 billion RMB, has the highest total ecosystem service value,while the mangrove values 82,270 RMB/ha·yr,contributing far more service value than any other vegetation types. Considering our limited knowledge about the ecosystem services and being aware of the flaws in the methods that we used, the result reported here should be less than the real value of the forest ecosystem of the Guangdong Province.