Equipment support system has a tendency for chaos and disorderly condition. Its mutually effect makes it continuously exchange for human resource, energy, material and information with outside world, minus entropy emerges continuously. Equipment support system will be orderly dissipative structure, when minus entropy surpasses entropy. This process embodies that equipment support system is evolving forever. Finally this paper puts forward the concept of equipment support dissipative structure system and cobweb organization structure mode of equipment efficient support system. Some conclusion and suggestion on the organization structure are valuable for equipment efficient support system.