Abstract: In view of synergetics theory, this paper analyzes cooperative patterns and operational mechanism of forestry compound system which is composed of natural, economical and social subsystems, and proposes the measure method of synergetic degree of multi-functional forestry system. The most cooperative patterns of multi-functional forestry system are synergetic development between any two subsystems. The synergistic effect is expressed in numerical range. The multifunctional forestry system is divided into several different forms. The ideal condition of synergetic development should be relatively stable and high efficiency cooperation, which is formed by self-organizing function of subsystems and longterm evolution of the system.