The first goal of this research is to verify the hypothesis that the implementation of open innovation has positive effect on performances of Chinese companies. The second is to verify further hypotheses that systemic quality management factor and human quality management factor have positive moderating effect on the relationship between open innovation and performances respectively. To achieve those goals, we conducted surveys and empirical researches ant tests using validity check, reliability analysis, regression model and moderate regression model. As the results of those researches, we found that open innovation affects performance positively in Chinese companies. As the further research results, human quality management factor has positive moderating effect on relationship between open innovation and performances, while systemic quality management factor does not. From these results we could obtain a managerial implication that implementing programs related to and investing on open innovation and human quality management factor simultaneously offer companies more improvement in performances due to synergistic effect between them. Furthermore, the reason that systemic quality management factor does not have that effect can be explained by productivity paradox which argues that it would take some time to have performance improvement after investing on some system or facility.