During the new crown pneumonia, many dental clinics were closed, resulting in many patients with dental pain and no way to treat it in a timely manner. This is mainly due to the special nature of dentistry. Some operations in dentistry involve a lot of droplet and aerosol dispersal, such as caries and pulpitis, apical infection, application of turbine drill for cutting and pulp opening of dental tissues, doing porcelain crown restoration application of diamond turning needle in cutting and grinding of teeth, and in the application of ultrasonic scaler for periodontal scaling of teeth, these operations will have more droplet and aerosol, with the operation to produce a larger dispersion. The vast majority of dental clinics and dental environments do not meet the conditions to isolate these viruses, so in case of the presence of a patient with novel coronavirus pneumonia during the operation, there is a risk of cross-infection of the doctor who sees the patient, as well as the nurses who are in contact with the patient during this time period, or the patients who are in the vicinity of the dental visit. Therefore, during this special period, many dental clinics choose not to accept or perform the above operations to avoid the transmission of the novel coronavirus through oral operations, which is also a special protection for the special period.