Stuttering is a disruption of the normal speech rhythm, which is manifested by involuntary repetition of speech, prolongation or cessation of articulation. Stuttering accounts for 1-2% of school-age children, and is 2-4 times more common in boys than in girls. About 50% of children who stutter start before the age of 5. When children aged 1-3 years old are in an emotional or stressful situation, the function of the articulation organs and vocabulary often cannot keep up with the speed of thinking, and it is more common to have transient stuttering, but as a special symptom it is a continuous and fixed form. 1, traditional stuttering correction methods In the history of mankind, stuttering has been a phenomenon for a long time, people began to treat stuttering research a long time ago. In the long-term struggle with stuttering, has gradually worked out some relevant correction experience. At present, the more popular stuttering correction methods in China are mainly pronunciation method, breathing method and psychological counseling, the following is a brief introduction to the three traditional correction methods. (1) Pronunciation method correction Pronunciation method is a correction method that occupies a large position in the traditional correction, and many stuttering patients can speak more fluently after a period of training in pronunciation method correction, so it is a more popular method at present. The training characteristics of pronunciation method are summarized as “slow, light, soft, coherent and rhythmic”, which is the opposite of the pronunciation method of many stuttering patients, so after stuttering patients really master and use the pronunciation method, the stuttering phenomenon has been greatly improved. (2) Breathing method correction More serious stuttering patients, in the coordination of breathing and language, there are two phenomena: one is the latter stage of a sentence, only care about speech, it can not care about the descent of the septal muscle, so that the re-aspiration of the action occurs with difficulty or trapped in a pause, forming a spastic state of the septal muscle upward tightening; the second is the last stage of the descent of the septal muscle, before it starts to rise to rush to speak, resulting in respiratory disorders, the occurrence of Severe stuttering occurs. (3) Psychological counseling Many people believe that stuttering is caused by the psychological tension of the patient, and as long as the stuttering patient relaxes and does not get nervous, the speech will naturally flow, so there is a stuttering correction class based on psychological counseling. In this correction class, the main use of psychological counseling, psychological implication of the patient to carry out the corresponding treatment, some patients reflected in a short period of time stuttering phenomenon really reduced, but over time, the psychological implication of a weakening, psychotherapy will no longer be useful. 2, stuttering corrector From the medical point of view, there is no effective conventional drugs, surgery, or speech rehabilitation training and other methods to cure stuttering disease. Clinically common is still the traditional method based on psychological guidance, language training, etc.. In foreign countries, different stuttering correction devices are also used, such as the use of auditory delay and audio variation, noise masking, and acoustic feedback (MAF) techniques to suppress or reduce stuttering, alleviate stuttering symptoms and develop an effective treatment for stuttering has been the goal of the efforts of clinical speech pathologists and otolaryngologists. Recent technological advances in digital processing technology and miniaturization have made concealed, portable, fluency-enhancing correction devices a viable method of stuttering correction. Both synchronous (e.g., frequency-shifted auditory feedback) and asynchronous (e.g., time-delayed auditory feedback and time-delayed visual feedback) verbal feedback have been found to help stutterers improve fluency. Verbal feedback has been shown to produce natural and fluent speech in different speaking situations, such as talking on the phone, and speaking in front of a crowd. Altered verbal feedback has also been found to improve fluency regardless of the speed of speech, and can consistently improve fluency even when used monaurally, rather than binaurally.