A sore throat in the morning may be related to tonsillitis, pharyngitis, reflux pharyngitis and other reasons. 1. Tonsillitis: when bacteria and other pathogens invade the tonsils, they can cause inflammation of the tonsils, swelling of the mucous membrane, congestion and other symptoms, and when swallowing saliva, a sore throat can occur. 2. Pharyngitis: If you suffer from pharyngitis, you may experience discomfort, dryness and pain in the throat in the morning, and then you may experience sore throat when swallowing saliva. 3. Reflux pharyngitis: If you suffer from reflux pharyngitis, due to the stimulation of gastric contents, the mucous membrane of the pharynx can be caused by congestion and edema, which may lead to a sore throat when swallowing saliva. It is recommended that those who have a sore throat in the morning go to a regular hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor, so as not to delay the condition.