In the emergency management of infectious diseases, the information disclosure mechanism of epidemic situation plays an important role in the prevention and control of epidemic. The ideal mechanism of epidemic information disclosure should meet the requirements of accuracy, timeliness and necessity. However, through the analysis of the current laws and regulations, there are some disadvantages in the information disclosure mechanism of epidemic situation in China, such as the lack of operational provisions for the information disclosure of unknown epidemic situation, the different provisions for the main body of the information disclosure of epidemic situation, the urgent need to refine the content of the information disclosure of epidemic situation, and the unclear time limit for the information disclosure of epidemic situation, It needs a process to form a scientific understanding of infectious diseases, which leads to the obstruction of information disclosure mechanism. The revised draft of the law on the prevention and control of infectious diseases (Draft for comments) has made some responses to the above problems, but there is still room for improvement. Therefore, we should build a hierarchical information disclosure mechanism, classify the epidemic information, clarify the disclosure content and time limit, and establish a social participation mechanism of epidemic information disclosure, so as to provide better information guarantee for the prevention and control of infectious diseases.