In this study, we assessed the value of the clinical application of YAG laser in 32 cases of nasal endoscopic surgery. It was found that the operation performed under the nasal endoscope with YAG laser has several advantages including less bleeding, clear observation, simplified performance, thorough excision and less postoperative pain. But it also has some disadvantages, such as laser-induced lesion in the surrounding normal tissues, easy pollution and damage of the opto-guide fiber.