Abstract: The problem of Chinese patent featuring “large number and poor quality” has become increasing significant. Academy and industry has been gradually emphasizing and recognizing the patent agency cervices’ role in technological innovation. However, the issue of enhancement and confirmation of patent agency services standard has not been fully argued and clearly answered. Empirical study is carried out based on relevant literature researches, we test the research hypotheses that the influence of patent agents’ competency on patent technology quality and patent application quality one by one, and quantify the influence degree and path of patent agents’ competency to patent quality. The results indicate that the patent agents’ knowledge structure, occupational ability, professional quality, personality and development motivation have a significant positive impact on patent technology quality; the patent agents’ skill experience, knowledge structure, sociability, professional quality, foreign language skills and occupational quality have a significant positive impact on quality of patent application. Researches on the relationship between patent agents’ competency and patent quality contribute to guide the formulation of patent agency industry standards, division of patents rank and formulation of related policies, and provide a theoretical basis for the application of the policy measures of solving the realistic problem existing in Chinese patent at present.