Based on the theory of value-chain, the composition and characters of value chain in the SME informatization business of telecom carriers are analyzed. The members of the chain comprehends end user, mobile communication carrier, terminal unit manufacturer, service supplier, content supplier, and network device supplier . The value-chain is netlike and fissionable. Different from the traditional ldquopushrdquo type, a value-chain of ldquopullrdquo type is constructed, where the end user is dominant. In the process of promoting informatization for SME, the telecom operators should change the traditional mode of cooperation in the value chain and build a new industrial chain. And on this basis, they can develop a development strategy about the operator industry chain. The strategy of outsourcing can accelerate investment return and reduce investment risks and operation expenditures. The industrial cooperation is a manner for enterprise to expand in greater scope and depth making use of its advantages on products, technology and market, oriented by the capital or value flow. The standardization refers to establish corresponding standards of carrier for information platform.