Abstract：This paper studies the industry difference and policy performance of product quality supervision based on China Enterprises-Employees Survey.The survey results and basic conclusions show that the industry bias of product quality supervision does exist. The probability of manufactures being supervised in key industry is significantly higher than that of non-key industry. Further study also shows that there is no obvious correlation between product quality and possibility of supervision inspection. Based on the findings of the empirical evidence, the following recommendations are made as: implement the "double random" supervision inspection mechanism on different industry，construct the enterprise product quality self-declaration system and promote effective transmission of regulatory signals base on big data platform.
Keywords：Quality Supervision，Supervision Inspection，Industry Difference，Policy Performance