Perfect vocalization depends on the structural integrity of the vocal folds, of which the vocal fold coverings (mucosal epithelium and superficial lamina propria) play a crucial role in ensuring vocal quality. Among the vocal fold vibration patterns, the vibration of the mucosal epithelium has the most pronounced effect on vocalization. All layers of the vocal folds are damaged after scar formation, especially the mucosal epithelium and the lamina propria are significantly altered, which leads to the impact of voice quality and vocal fold vibration function. Microsurgical laryngeal suturing technique is to apply special suturing instruments under a microscope and use 8-0 silk sutures to close the mucous membrane in the larynx. The purpose of suturing the mucosal wound is to accelerate wound healing, reduce scar formation and improve postoperative voice quality. For bilateral vocal fold lesions, the application of microsurgical sutures not only closes the surgical wound to effectively prevent postoperative adhesions, but also accelerates wound healing. For some larger vocal fold lesions such as Renk’s edema and cysts, the lateral microflap technique is first adopted, the mucosa is incised, the submucosal jelly-like fluid is cleared with suction and microclamp, or the cyst is peeled out completely, fIIl the overlying mucosal epithelium, and some of the excess mucosa is cut off with microscissors, taking care to avoid removing too much vocal fold mucosa and to keep the vocal fold mucosa with proper tension, and then the mucosal wound edge is sutured in alignment for 2-3 stitches. The suturing of the traumatic mucosa after excision of the lesion can shorten the mucosal healing time, reduce scar formation and improve the postoperative vocal quality.COz laser has the characteristics of precise, easy operation and little damage, which can assist in excision of excess mucosa, but the application of laser will delay the mucosal healing time due to the effect of thermal radiation. Generally, the mucosa of the lounges will heal in 2 weeks after surgery, the vocal cords will close well and the voice can start to be heard. For membranous laryngeal stenosis in the vocal cord area, after cutting the mucosa at the stenosis, the submucosal tissue is appropriately loosened and the wound is sutured, which can reduce the formation of scar, and the ablative mucosal wound can avoid the formation of adhesion again.