Abstract: With the rapid growth of modern coal chemical industry,a large number of volatile organic compounds(VOCs) emitted from its production processes will pose multiple environmental effects on the currentair quality. At present,the knowledge about the emission of VOCs from the production process of modern coal chemical projects is not enough to meet the management and decision-making needs of VOCs pollution control. To overcome this difficulty,the method of pollution source intensity calculation was adopted to compare and analyze the difference of the VOCs emission characteristics between modern coal chemical industry and petrochemical industry. Also the literature analysis and field research was conducted to analyze the weak links of VOCs prevention and control in modern coal chemical enterprises and explore the methods to overcome the main obstacles of pollution prevention and control based on the mature experience of VOCs pollution control obtained in petrochemical industry. It is found that the VOCs emission during gathering,transportation and treatment of waste water is the biggest emission source in modern coal chemical enterprise,which is obviously different with the VOCs emission characteristics of petrochemical enterprise. Unclear emission base is the main obstacle of VOCs pollution control in modern coal chemical industry. It is helpful to improve the VOCs pollution control level of modern coal chemical industry by establishing performance specification of VOCs continuous emission monitoring system to guide the on-line monitoring for VOCs emission from stationary pollution source. Based on the VOCs monitoring technologies at home and abroad,and the technical specifications of China's on-line monitoring of fixed pollution source emissions,an on-line monitoring technology system of fixed pollution source VOCs emissions in China's modern coal chemical industry was studied and established,and the requirements for system component and structure,technical performance,monitoring station,installation,debugging and test for technical indicator,acceptance,daily operation management,quality assurance,data auditing and treatment and other aspects of the system were elaborated. The study of the system standard provided a reference for the establishment of VOCs emission monitoring system in China's coal chemical industry.