A dry throat can be caused by chronic laryngitis, tumors and inflammation of the nasal cavity. 1. Chronic pharyngolaryngitis: it may be due to the inflammation of long-term stimulation of the mucous membrane of the throat, resulting in congestion and swelling of the mucous membrane of the throat, which leads to the emergence of a foreign body sensation, and at the same time, such patients are also accompanied by a burning sensation, dry throat, irritating cough and other symptoms. 2. Tumor: It may be caused by the presence of tumor in the throat. Whether it is benign or malignant tumor, it will lead to the feeling of foreign body in the throat, and due to the long-term compression of the tumor on the surrounding tissues, the secretion of the glands will be reduced, which will lead to the symptom of dryness. 3. Inflammation of nasal cavity: common rhinitis, sinusitis and other diseases in life, will stimulate the mucous membrane of the throat due to secretion, and the symptoms of dry throat and feeling of foreign body occur. Therefore, if the patient appears serious or persistent throat discomfort, it is recommended to go to the hospital in time for examination to identify the cause of the disease, targeted treatment.