In general, the throat always makes a humming sound, may be due to chronic pharyngitis, tonsillitis, sinusitis and so on. 1. Chronic pharyngitis: patients with chronic pharyngitis may have symptoms of increased secretion of glands, inflammatory secretions attached to the throat, so the patient appeared in the throat symptoms of foreign body sensation, the patient unconsciously will want to clear the throat, so there is a humming sound in the throat. 2. Tonsillitis: Inflammation of the tonsils will be due to tonsil congestion, swelling and so on, resulting in a foreign body sensation in the throat, and accompanied by a dry cough, so the patient will appear to always make a humming sound in the throat. 3. Sinusitis: patients with sinusitis nasal secretions will increase when the secretions are more there will be a backflow of the situation, backflow to the throat and produce a foreign body sensation, issued to clear the throat phlegm action will lead to a humming sound in the throat. If your throat is always humming, it may also be caused by psychosomatic factors, so we suggest that you consult a doctor in time to make a clear diagnosis.