Network information eco-chain is the information sharing system which consists of people and network environment existing in the network information ecology. The research for manifestations, struc- tural models and functions of network information eco-chain is one of the contents of the network informa- tion eco-chain' s basic theory research. This paper analyzes the manifestations of the network information eco-chain from three different angles, establishes the basic structural models and the derivative structural models of the network information eco-chain, and...