“Democratic Review of Administrative and Business Style” (DRABS) is one of methods of public participative government performance management in Mainland China. This paper is aimed to propose how to improve the practice of the DRABS by reviewing its implementation. From the perspective of new public management, government performance management must be “customeroriented” and assessed based on the public satisfaction, so it needs to absorb adequate public participation. In the exercise of the DRABS, the office-incharge would employ “assessment representatives” and conduct questionnaire surveys among the public, or so-called “the third party.” These are two kinds of public participation. Through the analysis of the DRABS and the two kinds of public participation, it can be found that the sources of public participation become increasingly diverse and the assessment also becomes more scientific; the targets and contents of assessment become broader; methods of assessment become more diverse. Under the DRABS, the service of government agencies has been greatly improved but some problems can be found in the process of the DRABS. There is information asymmetry between the assessment targets and assessors; the participation of the “third party” is too passive and too superficial; the design of the questionnaire is not scientific enough; the sources of the “third party” assessors do not match the assessment targets. For these problems, the author suggests that the openness and transparency of the government works should be strengthened; different assessment methods should be applied to different kinds of agencies; the questionnaire survey should be more scientific and professional; the capacity of the “third party” participation should be enhanced; government affairs should be improved by the “third party” assessment.