Sore throat and swollen gums can be caused by improper diet, or inflammation of the throat and periodontitis. 1. Improper diet: for example, taking stimulating spicy food, drinking alcohol, smoking and other stimuli, will cause direct stimulation of the gums and throat, resulting in sore throat and swollen gums. 2. Inflammation of the throat: for example, various types of pharyngitis, tonsillitis, pharyngitis and other diseases can cause symptoms of sore throat. 3. Periodontitis: for example, gingivitis, apical periodontitis, pulpitis, wisdom teeth pericoronitis, etc. will cause the manifestation of swollen gums. Sore throat and swollen gums, there may be other reasons, it is recommended to go to the hospital in time for further examination, to clarify the cause of the treatment of medical advice.