1, do not abuse the vocal cords: first of all, we must clearly recognize that in everyday life, the vocal cords can be harmed by excessive or improper use. The product should be more avoid the behavior that may harm the vocal cords. Remember to use the appropriate appropriate vocal way to speak, in order to maintain our vocal health. 2, relax the muscles: the neck, shoulders and chest muscles should be relaxed at the right time, in order to reduce the pressure on the larynx and reduce the damage to the vocal cords during the vibration. So always pay attention, do not tighten these parts of the muscle, and do more neck, shoulder and face stretching soft exercise and abdominal breathing. 3, whisper: loud speech is easy to make vocal cord injury, should try to avoid. Especially do not emotionally loud yelling or in a noisy environment to speak, in this case the voice will not be able to help but raise, and local, neck muscles will also involuntarily tension, making the vocal cords more vulnerable to injury. 4, slow down the speed of speech: slow down the speed of speech, not only can increase the understanding of the listener, and can reduce the muscle tension in the neck and larynx, reducing the chance of injury to the vocal cords due to repeated rapid vibration. Also do not say too long sentences in one breath, so as not to have the situation of upper and lower breath, making the need to relax the muscle involuntary tension, increasing the chances of vocal cord wear and inflammation. 5, adequate rest: adequate voice rest and reorganization of sleep is absolutely necessary for the health of the vocal cords, so people who need more eternal life at work must grasp the possible time to allow the vocal cords to get a moment’s rest and avoid shouting or chatting after work. If you find that the quality of your voice has changed after using your voice a lot, you must let your voice rest for 2 to 3 days to avoid irreversible lesions of the vocal cords. 6. Hydration: Hydration is absolutely important for the vocal cords. Water can not only maintain the sound quality, but also reduce the possible damage to the vocal folds when they vibrate. Remember to use drinks that are too cold or too hot to avoid acute vasoconstriction or diastole around the vocal folds, which may cause local spasm or swelling or even burns. In addition to drinking more warm water, speech or singing money should not take general cold medicine or dairy products, mint, etc., because it may cause the respiratory tract mucous membrane water secretion reduced. If you must take it, you should drink more and warm water to overcome the dryness of the mucous membrane. 7, do not cough hard: coughing hard and “throat clearing” action is especially harmful to the vocal cords than shouting, so please try to avoid, usually if there are such habits must try to improve, please remind friends and relatives. Drinking more warm water and appropriate medication can help reduce the feeling of foreign body in the throat and reduce the feeling of wanting to “clear your throat”. 8. Avoid harmful substances: Avoid using or touching foods or substances that make the vocal cords congested or thickened to reduce the chance of vocal cord injury, such as fried foods and most irritants (e.g., tobacco, alcohol, chili peppers, strong tea and coffee). Second-hand smoke is especially damaging to the vocal cords, and it is also the main culprit in the development of laryngeal cancer. 9. Stomach acid can damage the vocal cords: Diseases of other organs in the body such as lungs and heart may also affect the health of the voice. Especially stomach acid, acid reflux can damage the vocal cords, so it should be treated immediately to maintain the health of the vocal cords. 10. Voice rehabilitation and retraining: People who need to speak a lot at work should receive special training to learn good and effective vocal techniques to avoid possible damage to the vocal cords. The tolerance of the voice is similar to most sports and requires special training techniques. If trained properly, voice quality can be maintained for a long time. 11. Early signs of disease: It is important to keep track of the condition of your voice and pay attention to whether your vocal cords are sick. Early diagnosis can greatly improve the chance of cure. Early signs of voice disease are as follows: -Change in voice: The quality of voice is different from the past, for example, it becomes low or hoarse. -Decreased tolerance: The use of the voice is not as durable as it used to be. -Reduced range: The range of high and low tones becomes narrower when speaking or singing. -Reduced vocal range: The range between loud and low voices is reduced, especially when you cannot speak in a low voice. -Symptoms of throat discomfort: After using your voice or speaking, other symptoms such as sore throat may occur. If you have these symptoms, you should seek immediate treatment from an otolaryngologist in voice medicine.