Vocal correction for voice disorders: 1. For the treatment of chronic benign vocal fold mucosal lesions (vocal fold edema, vocal fold nodules, vocal fold polyps, chronic hypertrophic vocal fold inflammation) caused by incorrect vocalization methods. 2. For the treatment of functional vocal disorders (excessive vocal function, male and female voice and laryngeal muscle strain, etc.). The misuse and abuse of voice is the most common cause of many voice disorders Correct vocalization should mean that the vocal organs efficiently and effortlessly produce the best sound with the best effect and vocalization with comfort and effort. Otherwise it is a wrong or not correct vocal method. According to different pathological voices, scientific vocal methods are used to make the lesions of patients with these voice disorders, gradually fade away, promote mucosal regeneration and restore normal mucosa. The use of non-invasive articulation therapy is one of the most important methods of treating voice disorders.