Based on the analysis of the internal,external,opportunity driving factors and the couple dynamic process of enterprises technical transition realization,this paper quantitatively expressed the every driving factors optimal coupling mechanism through the driving coupling model establishment by the design of the couple parameters and factors threshold.Research shows that the enterprise technical transition realization depends on the smallest deviation of first-order conditions of the driving factors optimization,but the smallest deviation is caused by the maximum couple degree.An effective method to improve the couple relationship through appropriate contribution rates adjustment of the driving factors,which can upgrade the enterprise independent innovation capability,is given as a conclusion.The above viewpoints can be verified by the example of the X railway enterprise.