Sore throat is not good for several months, common diseases include: chronic pharyngitis, chronic tonsillitis, laryngeal cancer and so on. 1. Chronic pharyngitis: it is common in acute pharyngitis with irregular treatment, long-term smoking and drinking, etc., which leads to long-term stimulation of the pharyngeal mucosa by inflammatory substances, thus causing prolonged sore throat, dryness and itchiness, foreign body sensation in the throat, and frequent coughing and other symptoms. 2. Chronic tonsillitis: often occurs in acute tonsillitis recurring author, the continuous release of inflammatory factors to stimulate the sensory nerves, followed by persistent pain in the throat for several months, accompanied by a feeling of foreign body in the throat. If tonsils are too enlarged, it will also cause snoring and difficulty in breathing. 3. Laryngeal cancer: If malignant tumor of larynx invades normal tissues, it will lead to the phenomenon of sore throat for several months, which can be accompanied by foreign body sensation in the throat, discomfort, coughing, sputum with blood and other symptoms. If you have a sore throat for several months, it is recommended that you consult a doctor for a clear diagnosis under the guidance of a systematic examination. At the same time, to avoid undesirable stimulating factors and triggering factors, life should quit smoking and drinking, eat less spicy and stimulating food, air quality is not good when you should wear a mask to do a good job of protection.