Vocal fold polyps, vocal fold nodules, chronic laryngitis and other vocal fold voice lesions may occur again even after surgery or other treatments, but if the vocal habits are not corrected correctly. Therefore, it is important for voice patients to pay more attention to mastering the correct voice method and pronunciation habits in addition to medication and surgical treatment. 1. Do not use your voice excessively. Excessive use of the voice is the abuse of the voice that exceeds one’s ability (use of voice). Each person’s vocal ability has three aspects: pitch (frequency range of voice), intensity (tension of vocal cords) and time (time to pronounce voice), beyond which vocal lesions will occur. 2. actors singing, teachers should not eat too much before teaching, preferably two hours before eating. 3. The vocal folds have physiological changes during the period of voice change, menstruation and pregnancy, and the vocal folds are delicate during this period, so it is not easy to recover after trauma. 4. Bad habits, such as smoking, alcohol, chili pepper and cold drinks after singing, are not good for the laryngeal organs. So try to change such habits. 5. To change the habit of clearing the throat. Many people may often use this action to cough up the phlegm in their throat or to make their voice clearer, but this action makes the vocal cords instantly and severely stretched, which can easily cause vocal cord damage. 6. Vocal cord polyps, vocal cord nodules after surgery is best to abstain from sound for more than 1-2 weeks. 7. When you have a cold, you should pay attention to voice rest, especially after a cold with hoarseness, or if you have been diagnosed with laryngitis. 8. Singing at the top of the voice, because the vocal cords are too tightly closed, both sides of the vocal cords rub against each other, so more singing occupational diseases occur! Tip: If you really need to use your voice, you should use the bass sound as much as possible to prevent the vocal cords from rubbing together. 9. Teach children not to shout, especially active male children, who are prone to suffer from vocal cord nodules. 10. Hoarseness often occurs when the laryngeal muscle is fatigued, and laryngeal muscle fatigue is generally difficult to recover from! The professional vocalist should pay attention to the need for regular rest for the muscle in the practice of voice.