The causes of hoarseness of the throat are the following three aspects: 1, vocal cord lesions, the vocal cords are speech vocal cord vibration caused by pronunciation, when the vocal cords will be edema when inflammation, movement disorders resulting in hoarseness. Diseases that cause hoarseness are acute or chronic laryngitis, vocal fold nodules, vocal fold polyps, vocal fold leukoplakia, papilloma, and even malignant tumors, laryngeal cancer may lead to hoarseness; 2, the joint lesions that govern the movement of the vocal folds, which is atlantoaxial joint lesions, such as atlantoaxial joint dislocation, subluxation, or because of the peripheral inflammation that leads to hoarseness; 3, laryngeal recurrent nerve pathology that governs the movement of the vocal folds, laryngeal recurrent nerve palsy Or inflammation leading to hoarseness, such as chest mediastinal tumor compression of the recurrent laryngeal nerve, or thyroid surgery to damage the recurrent laryngeal nerve. If the hoarseness of the throat does not recover for a long time, you should go to the ENT department of the hospital to avoid delaying the treatment of laryngeal cancer and other malignant tumors.