Banlangen cannot prevent pneumonia virus. Banlangen is suitable for the treatment of common wind and fever colds and other febrile diseases, and has no preventive effect on viral infectious pneumonia. Patients should not seek medical help when they are sick and blindly buy and stock up on drugs. For new pneumonia, the National Health Commission and many local health commissions have issued the “Pneumonia Treatment Plan for New Coronavirus Infection”, which recommends a number of Chinese medicines and antiviral western medicines available during the observation period, which do not include Pancreatic Blue Root. In the prevention phase, a healthy diet, wearing a mask and more ventilation are advocated to avoid blind medication that may cause unnecessary damage.