In view of the importance and features of Growth Strategy,its mechanisms have to be constructed,based on Core competence,in terms of related plurality,isolating mechanisms,transverse expansion from a certain point of the industrial chain,and innovation cluster formation on technology platform and technology trajectory.

In this paper,we build a model of relation between knowledge management and related diversification company performance.

although it is well recognized by researchers and entrepreneurs that related diversification is good to enhance corporate, the meaning and enforcing route of the related diversification strategy is in revolution.

The article puts forward the fact that the economics of scope mainly exists in relevant diversification, analyses the embodiment of economics of scope in relevant diversification, summarises the three types of economics of scope, which are namely, the one based on tangible resource, the one based on intangible resource, and the one based on competitors, and proposes the su.