Sound is produced by the vibration of the vocal cords driven by the muscles in the larynx, the organ of articulation (the “laryngeal node” we feel in the center of the neck is part of the larynx), and the power source of vibration comes from the airflow in our respiratory tract. When we inhale, the air flows into the lungs through the open vocal chambers; when we pronounce the words, the air flows through the lungs, passes through the closed vocal chambers, and the vocal folds vibrate to produce sound. In addition to the length and thickness of the vocal cords, a beautiful and beautiful voice also requires the participation of the cranial, nasal, oral and pharyngeal structures, which is what we call “resonance”. There are many reasons for hoarseness, such as excessive use of the voice, fatigue, excessive smoking and drinking, and upper respiratory tract infections, which can cause lesions of the vocal cords. In the acute stage, there is often a sudden loss of voice, inability to speak or hoarseness of voice with pain in the throat. The examination at the hospital will reveal acute congestion, edema, and bleeding in the vocal cords, which will usually improve in about 3-5 days after treatment with oral medication and local medication nebulized inhalation. Of course, this period requires the patient to cooperate with the doctor absolute “voice rest”. However, many friends have misunderstandings about “voice rest”, for example, some patients complain in the clinic, “I haven’t spoken for almost a month, why is it still bad?” However, after talking with the patients, we found that they only changed their speech to “air voice” speech with their voices lowered, thinking that this can reduce the vibration of the vocal cords and achieve the purpose of resting the vocal cords. However, instead of reducing the burden on the vocal cords, this increases the fatigue of the vocal cords and aggravates the disease. In the chronic stage, vocal cord lesions can cause unrelenting hoarseness, dryness in the throat, and foreign body sensation for several months. The examination at the hospital will reveal dark red, hypertrophic and dry vocal cords, and in this case, short-term medication is often ineffective. If you don’t use your voice in moderation at this stage, small nodules and polyps will appear in the vocal folds, and surgery is often required to achieve the goal of treatment. Friends, after understanding the common acute and chronic disease process of the vocal cords, you should visit a professional physician promptly when the above mentioned problems occur in your voice and choose medication according to the severity of your condition, but the most critical thing is to make sure to give your vocal cords sufficient rest. Some friends may ask: “Why I can’t sing in high notes and can’t sing in low notes; when I’m in a high mood, I can’t sing, and even my voice is dumb the next day”. In fact, a beautiful and charming voice not only requires the normal structure of the innate articulation and resonance organs, but also comes from the acquired voice training is essential. For us ordinary people, actors are too professional to train their voices, but if we learn some of their skills with their voices, friends will benefit a lot from “K”. 1, choose a song that suits you: everyone has a specific range, such as: male bass range 81 ~ 325Hz, female bass 145 ~ 690Hz, male alto 96 ~ 426Hz, female alto 217 ~ 1024Hz, male soprano 122 ~ 580Hz, female soprano 256 ~ 1046Hz. different styles of singers, interpretation of the song tone is very different. Therefore, when choosing songs to sing, do not blindly follow the trend of “popular”, imitating some singers to soar high notes, because these singers have been repeatedly trained to use the real falsetto well, even so, this is a test of their vocal cords. Friends in the party although you can try this kind of songs, but must stop in moderation, otherwise it is easy to cause vocal cord damage. 2, singing time should not be too long: it is recommended that each time the friends sing when appropriate, should not be too long (generally not more than 2 hours). If there is dryness and discomfort or even pain in the throat and throat, you may want to use your enthusiasm to be a good listener! 3, do not eat too much when singing: there is a folk saying “full blowing hungry singing”, meaning that a full meal can blow the horn well, hungry stomach to sing well, this is not unreasonable. At present, many “KTV” are providing buffets, but too much diet will make the abdomen full (carbonated drinks will cause the same result), the diaphragm between the chest and abdominal cavity will be lifted by too much food, affecting respiratory exchange, resulting in singing breath is not smooth, the tone is greatly reduced. Therefore, if you want to show your hand in front of your friends, don’t crave delicious food before singing. 4, do not drink too cold or too hot drinks when singing: drink some drinks when singing can moisten the throat, to avoid vocal cord mucosa due to dryness and loss of voice, but drinking too cold or too hot drinks will cause strong stimulation of the throat mucosa and laryngeal muscles, serious cases will cause a short period of “loss of voice”, so it is recommended that the choice of warm and cool tea drinks better. 5, usually reduce the stimulation of alcohol and tobacco: long-term smoking and alcohol abuse will make the vocal cords mucous membrane congestion, swelling, and the above-mentioned chronic phase of vocal cord disease changes, so it is impossible to have a good tone. Smoking while singing will make the throat dry and the laryngeal muscles fatigue is not easy to recover; drinking while singing, alcohol will reduce the accuracy and coordination of the central nervous system on action control, which will certainly affect the pronunciation, and drinking will make the vocal cords edema, congestion of the mucous membrane of the throat, increased secretions, which directly affect the pronunciation. Of course, during the holiday celebrations, although tobacco and alcohol are inevitable, but friends are advised to moderate more. 6, usually strengthen exercise: some friends will be in the passion of singing a song after the hand numbness, dizziness, although not serious, often rest a while on the good, in fact, this suggests that he sang singing lack of oxygen. In addition to the skills needed to sing, but also need physical support. Therefore singing enthusiasts to enjoy the interpretation of the key moment, really can not be separated from the usual regular exercise. 7, female physiological period to avoid a long time with the voice: women 2 to 3 days before menstruation to menstruation because of the increase in estrogen, the vocal cord mucosa will be congested, edema and lead to rough and unstable voice, pronunciation is easy to fatigue, so it is best to reduce and avoid excessive use of voice during this period. Finally, I wish all my friends have a more magnetic and attractive voice and singing voice.