Synergy of internal elements has become an important way to improve innovation performance. On the basis of building conceptual model, this paper comprehensively explores the relationship and mechanism among synergy of internal elements, dynamic capability and innovation performance by questionnaire and SEM. The result shows that the synergy of technical and non-technical elements can significantly improve total synergy of internal elements inside enterprises, while the synergy of internal elements cannot directly improve innovation performance. However, when dynamic capabilities are integrated as intermediary variables, the total synergy can effectively promote innovation performance. Finally, it is to put forward some suggestions to improve innovation performance by enhancing dynamic capability.