Frequent mmmm sounds from the throat are mostly throat foreign body sensation or mucous phlegm stimulation caused by the clearing of the voice, common diseases include: chronic pharyngitis, reflux pharyngitis, tonsil hypertrophy and other causes. 1. Chronic pharyngitis: Smoke, dust and other factors can easily induce this disease and aggravate the symptoms, resulting in patients often appearing dry and itchy throat, mostly accompanied by foreign body sensation and other uncomfortable symptoms. As a result, patients will have habitual throat clearing behavior, resulting in frequent mmmmm sounds from the throat. 2. Reflux pharyngitis: patients usually have a history of reflux esophagitis, coupled with smoking, alcoholism and other bad habits, will make the stomach contents reflux to the throat, the mucous membrane of the throat caused by irritation, thus causing the throat to frequently emit mmm sound. There will also be hoarseness, nausea, burning sensation in the throat and other uncomfortable symptoms. 3. Tonsillar hypertrophy: mostly due to chronic diseases caused by repeated inflammation of the tonsils, patients usually have a dry throat, foreign body sensation and other uncomfortable symptoms, so it’s easy to make the throat frequent mmmmm sound throat clearing behavior. The throat frequently sends out the sound of hmmm, may also be post-nasal drip syndrome, it is recommended to actively improve the examination, a clear diagnosis after the choice of targeted treatment.