In the knowledge economy times, the firm how to develop the maximum benefits from intellectual capital to promote innovation performance by knowledge integration. The study based on resource-based theory and knowledge-based theory to explore of the impact of intellectual capital on innovation performance.The purpose of this study is to investigate that whether intellectual capital will profit knowledge integration; the relationship between knowledge integration and innovation performance and the study surveyed the Chung-Shan institute of Science and Technology. Totally 305 copies of the questionnaire were released; 250 valid were returned with a valid sample return rate of 81.96%. Through statistical analysis such as correlation analysis, regression analysis and path analysis, the results of the investigation demonstrate the following important findings:1. Intellectual capital had a significant positive influence on knowledge integration and innovation performance.2. Knowledge integration had significant positive influence on innovation performance.3. If organization can improve the capability of knowledge integration, then the intellectual capital have even more pronounced influence on innovation performance.