The State-owned forest area of Jilin Province is an important part of northeast state-owned forest areas. Owing to excessive deforestation for a long time, economic, ecological and social system of this forest area gets into a non-synergetic and unsustainable state. By investigation of the economic, ecological and social development situations on site, with expert investigation method, this paper sets up an index system of comprehensive evaluation of synergetic development effect of economic-ecological-social system of state-owned forest area in Jilin province with 4 layers and 3 modules. With multiple correlation coefficients method and the SPSS, the paper calculates the weight of each index of module layer, norm layer and elements layer. Then, with a linear weight sum method, the paper calculates synthetical index value of synergetic development effects of economic, ecological and social system of 18 forestry bureaus. According to the calculative result, it analyses synergetic development effect and trend of economic, ecological, and social system of every forestry bureau in detail. According to the analytical result, a conclusion was drawn that there is a gradual strengthening trend towards synergetic development of economic, ecological, and social system in the state-owned forest area of Jilin province since 2000, and on the whole, this trend will evolve towards the aim of high effective synthetical development. This is the result of continuously deepening reform and the sustainable development strategy in the state-owned forest area of Jilin province.