Abstract:

The compound subject of public goods supply,which is composed of the three main bodies of state,market and society，plays a key role in realizing  multi-agent cooperation,interoperability and improving supply efficiency.The “compound” participation in the supply of public goods is an important breach to reconstruct the supply structure of public goods and to seek the “supply change”.The introduction of the concept of compound governance and the value chain theory provides theoretical support and model reference for the construction of governance logic and governance structure of administrative supply,market supply and social organization supply.To improve the supply efficiency of public goods,it depends on the innovation of cooperative mechanism and institutional arrangement.By promoting the interaction，mutual support and mutual share among the different supply structures inside the compound subject of public goods supply,social needs can be found and the diverse demands of the citizens can be timely responded.

Key words: value chain, supply of public goods, compound subject, coordinated participatio