Vocal fold polyp is a benign lesion, generally speaking, its main danger is that it causes difficulty in a person’s pronunciation. It brings inconvenience to a person’s study and life. The polyps are relatively large and can cause hypoxia and a series of complications in the body. Polyps usually cause painless hoarseness. Hoarseness is caused by incomplete closure of the vocal folds and irregularity of vibration, both of which are the result of polyps. If the polyp is located at the lower edge of the vocal folds, it can flip in and out of the vocal fold closure area and produce only intermittent vocal breaks. In some cases, this voice change may be accompanied by a foreign body sensation in the vocal fold area or by frequent throat clearing movements that can be very uncomfortable. All of these symptoms can have a negative impact on a person’s daily life, work and study. In addition, there may be vocal fold bleeding due to the force on the vocal fold polyps caused by the constant vibration of the vocal folds during the pronunciation process. After bleeding, the polyp appears to keep increasing in size due to the body’s self-repair. When the polyp is located at the edge of the vocal folds, it can appear that the oxygen supply is insufficient during breathing. It can have a greater impact especially during sleep. It can cause chronic hypoxia during sleep, and after a long time, it can cause respiratory sleep apnea syndrome. This disease can cause impaired cardiopulmonary function if it is not treated promptly in the early stages. The harm of vocal cord polyps to human body is mainly reflected in two aspects, one is to cause pronunciation difficulties, tone changes affect daily life and work, and the other effect is to cause the human body to lack oxygen for a long time, affecting health.