Oral spray medication is not recommended to be swallowed immediately after spraying, but to be held in the mouth for a few moments, so that the medication can have full contact with the lesion and exert its effect. There are many oral spray medications, commonly used such as watermelon cream spray, open throat sword mist, ribavirin mist, etc., mostly used for the treatment of oral diseases or relief of certain symptoms such as mouth ulcers, sore throat, viral infections and so on. The main ingredients of herbal oral sprays are often herbs such as peppermint, ice chips, watermelon cream, etc. The active ingredients of some medications used for the treatment of viral infections are antiviral drugs such as ribavirin. The dosage form used has the characteristics of local absorption and therapeutic effect in the mucous membrane of the oropharyngeal cavity, so do not swallow the medicine immediately after spraying, so that the medicine can stay in the mouth for a period of time. Do not drink water immediately after the use of oral spray, will dilute the drug components in the oral cavity, a few minutes to dozens of minutes before rinsing or drinking water, should be examined by a specialist doctor to confirm the diagnosis of the guidance, the specific use of the instructions for use of the drug shall prevail.