For mild throat discomfort and sore throat, you can gargle with light salt water. Light salt water gargle is half a cup of warm boiled water with a spoonful of salt and gargle for 30 seconds each time, which helps to sterilize and fight infection. Salt water gargle can relieve sore throat and flush mucus from the mouth, which helps relieve sore throat, but it is mainly used for very mild sore throat. If the patient has a more pronounced sore throat with clinical manifestations such as difficulty in opening the mouth, restricted opening of the mouth, difficulty in breathing, difficulty in swallowing, and fever. In this case, patients are advised to go to the ENT department for electronic laryngoscopy to determine whether the patient has acute pharyngitis, acute tonsillitis, peri-tonsillitis, acute epiglottitis, or infection in the interstitial space of the pharynx. Then under the guidance of the doctor for symptomatic treatment of drugs, saline gargle treatment in this case can only be used as an auxiliary treatment, does not play a major role.