Abstract:The role of the technical spin-offs'enterprises in promoting economic development is becoming more and more obvious.Technical spin-offs'enterprises have become important subjects of national innovation system.Knowledge sharing is their key to technological innovation.This paper explores the elements of the technical spin-offs'enterprises knowledge sharing from four levels of situation,main body,content and process based on the theories of knowledge base view and enterprise growth.In this way,this paper builds the technical spin-offs'enterprises knowledge sharing models based on sharing situation which provide empirical references for the technical spin-offs'enterprises knowledge sharing. In the stage of business survival, the model named transfer knowledge sharing should be chosen. In the stage of rapid development, the model named collaborative knowledge sharing should be chosen. In the stage of mature transformation, the model named driven knowledge sharing should be chosen.