Ear, nose and throat hoarseness is a relatively common ENT symptom, generally speaking, the main causes include: vocal cord infection, vocal cord nodules, vocal cord polyps, dislocation of the cricoarytenoid joint, laryngeal cancer and so on. Vocal fold inflammation is mainly caused by cold and congestion of the vocal folds, at this time, the first thing is to abstain from speaking and let the vocal folds rest fully. Vocal fold nodules and vocal fold polyps are mainly caused by excessive use of the voice, and they proliferate at the junction of the front and middle third of the vocal folds, which can be treated conservatively for one to two months with oral treatment such as Golden Voice Dissemination Pill or Huang’s Sound Pill. Dislocation of the cricoarytenoid joint is mostly seen in patients with trauma or general anesthesia intubation. Laryngeal cancer is a malignant tumor. If the lesion invades the vocal cords or the recurrent laryngeal nerve, hoarseness will occur, which can only be treated by surgery. The most common clinical cause of hoarseness is vocal cord nodule laryngitis, which can generally be improved by conservative treatment, so after hoarseness occurs, you must go to the ENT department of a local hospital and use indirect laryngoscopy or electronic nasopharyngoscopy to make a clear diagnosis for better treatment.