Vocal fold polyps are mainly benign hyperplastic lesions located on the surface of the vocal folds and are seen with varying degrees of hoarseness as the main complaint. In most cases, electronic laryngoscopy or stroboscopic dynamic laryngoscopy is required to determine whether there is an occupying lesion on the surface of the vocal cords. The fee for electronic laryngoscopy is usually around 80-100 dollars at a Level II hospital. Dynamic stroboscopy is generally only available in tertiary hospitals, which can observe the mucosal waves of the vocal cords, and the cost is relatively high, usually around 200-240 yuan, and the corresponding cost of infiltrative anesthesia, which is around 20-30 yuan.