It’s of great significance for maintaining the authority and impartiality of the judicial to recognize the subjective aspects of the crime of the obstructing infectious disease prevention and control correctly. The “Opinions of Punishing Novel Coronavirus against Infectious Diseases and Preventing and Controlling Crimes in Accordance with the Law” limits the scope of the crime of endangering public safety by dangerous methods，and define other acts of resistance to epidemic prevention and control measures as the crime of obstructing the prevention and control of infectious diseases. This mechanical regulation makes it impossible for the judiciary to accurately determine the subjective fault of the crime of obstructing the prevention and treatment of infectious diseases when judging cases. The crime of obstructing the prevention and treatment of infectious diseases is a negligent crime. Therefore，the specific determination of the subjective fault of the concealment crime of obstructing the prevention and treatment of infectious diseases should investigate whether the doer has sufficient knowledge of the causal chain of the harmful results caused by the concealment. Specifically，it is necessary to make a judgment based on the actor’s knowledge of himself as the “source of infection”，the actor’s knowledge of the nature of concealing behavior，and the actor’s knowledge of the harm results，combined with relevant factual factors.