There are many problems novel coronavirus has in dealing with epidemic cases. Through case studies, the article clearly puts forward the concept of "following the procedures and protecting rights", and emphasizes the necessity of adhering to the principle of procedural justice. Combined with two high and high opinions on punishing the prevention and control of crimes against new type coronavirus infection in accordance with the law, the process of standard formulation is further defined. It is extremely important to carry out the concept of "strict standards and clear boundaries" to adhere to the principle of legally prescribed punishment for a crime and prevent judicial arbitrary judgment. The article points out that in dealing with epidemic cases, the judicial organs should not only strictly control the evidence, implement the concept of "attaching importance to facts and stressing evidence", keep the bottom line of evidence judgment principle, but also ensure the entry into criminal procedure, implement the concept of "cautious conviction and modest body restraint", correct the wrong tendency of being punished frequently, coordinate the relationship between law and strictness, and achieve the combination of leniency and strictness. For the illegal use of power and willful use of power during the epidemic period, we should "uphold fairness and justice", dare to show the sword, and practice justice for the people. The rule of law under the prevention and control of epidemic situation is inseparable from observing. Under the premise of giving full play to the role of criminal justice, we should cultivate and implement the concept of "comprehensive management and obvious wisdom", and be good at realizing the "multi latitude value balance" between cracking down on illegal crimes, safeguarding citizens' legitimate rights and interests and restoring social and economic development by giving full play to the role of criminal justice.