Obstructive sleep apnea-hypopnea snydrome (OSAHS) is a common sleep respiratory disorder caused by apnea and hypoventilation due to collapsed upper airway obstruction during sleep, accompanied by snoring, sleep structure disorders, frequent decreases in blood oxygen saturation, and daytime sleepiness. According to foreign literature, 4% of men and 2% of women in the age group of 30 to 60 years suffer from this disease. Many factors have been identified in recent years, such as abnormal upper airway anatomy, obesity, family genetics, hypothyroidism, acromegaly, Cushing’s syndrome, etc. In addition, neurological, muscular and humoral factors are also involved in the development of obstructive sleep apnea syndrome. OSAHS patients have recurrent episodes of hypoxic hypercapnia caused by upper airway occlusion during sleep and increased upper airway resistance during breathing, resulting in shallow and slow breathing or pauses, which can lead to neuroregulatory dysfunction and dysregulation of catecholamine, endothelin and renin angiotensin systems in severe cases, thus causing systemic hemodynamic changes and tissue hypoxia, resulting in multi-system functional impairment. The impact on cardiovascular system is especially significant, and is a risk factor for hypertension, cardiovascular and cerebrovascular diseases; the impact on the nervous system causes patients’ memory loss and low work efficiency; the impact on the immune system causes the body’s resistance to weaken; the loud snoring also affects the rest of other people in the same room; in short, OSAHS seriously damages the physical and mental health of patients and causes unnecessary waste to the society and economy. Therefore, it is very important to strengthen the understanding and intervention of OSAHS. Treatment of obstructive sleep apnea hypoventilation syndrome is mainly divided into two categories: non-surgical treatment and surgical treatment. In non-surgical treatment, some patients can achieve the goal through conservative treatment (such as changing sleep posture, weight loss, etc.), while most patients need further interventional treatment. continuous positive airway pressare (CPAP) is a treatment modality with established efficacy. It is also known as wearing a respirator mask during sleep and assisted breathing through a ventilator, with 100% efficiency and immediate effect. It is suitable for all types of snoring, however, it is necessary to bring it every time you sleep, which is too troublesome for some people, but the benefit for snoring patients is that it solves the problem of sleep hypoxia, which is worth advocating. Surgical treatment is to release the anatomical narrowing of the upper airway by surgical means, and there are various surgical methods. When surgical treatment is performed on OSAHS patients, it is necessary to understand the overall condition of the patient and the anatomical abnormalities of the upper airway comprehensively. The basic principles of surgical treatment are: (1) to emphasize comprehensive treatment for OSAHS; (2) to release the structural stenosis factors present in the upper airway; (3) to develop a surgical plan according to the site of obstruction, and to make staged surgery feasible for patients with multiplanar stenosis; (4) to recommend preoperative CPAP therapy or tracheotomy for severe patients. Patients with OSAHS have been examined for upper airway stenosis, and different surgical approaches are adopted depending on the anatomical stenosis site. Currently, the effective method to solve pharyngeal obstruction is uvulopalatopharyngoplasty (UPPP) with an efficiency of 50% to 70%, but postoperative complications such as open nasal voice and nasal reflux during feeding can limit the development of UPPP in some patients; UPPP is not effective for hypopharyngeal obstruction caused by hypertrophy of the tongue root and other reasons, while severe OSAHS patients are often associated with tongue hypertrophy and posterior tongue root drop, which in turn compromise the efficacy of UPPP. The current surgical procedures to address tongue root stenosis include tongue reduction, mandibular advancement, and tongue advancement, but these procedures bleed a lot, affect the occlusal relationship, and are limited in their implementation. In addition, for children snoring, if it is obvious that the tonsils are enlarged and combined with adenoid hypertrophy, performing tonsil removal plus adenoid scraping can remove the disease hand to hand, and the earlier the treatment for children snoring, the better. The chronic lack of oxygen caused by snoring will affect the child’s physical and intellectual development. With the development of science and technology, low-temperature plasma technology is used in clinical practice. Low-temperature plasma assisted upper-airway procedure (CAUP) is a new concept proposed in the field of OSAHS treatment, the core of which is to use low-temperature plasma technology to complete the cutting, ablation and hemostasis of the treatment site. The working temperature of this technology is between 40℃ and 70℃, which can complete the perforation and ablation under the mucosa and almost maintain the integrity of the pharyngeal mucosa; the positioning is accurate and the damage to the extra-target tissues is slight; the hemostasis can be stopped while cutting during the operation and the bleeding is low; the local edema is also slight after the operation. CAUP can be used to treat OSAHS by selecting the inferior turbinate, soft palate, tonsils and tongue root for low-temperature plasma perforation and ablation according to the preoperative positioning of the obstruction plane, and for those with low hanging soft palate and hypertrophy, the whole soft palate can be cut and perforated for ablation, which can shorten the length of the soft palate and reduce the thickness and compliance of the soft palate through postoperative scar contraction, and obviously lift the palatopharyngeal obstruction; for those with hypertrophy of the inferior turbinate Low-temperature plasma ablation can effectively improve nasal ventilation; perforation ablation of the tongue can effectively lift the stenosis of the tongue root plane. Therefore, low-temperature plasma-assisted upper airway angioplasty can target the different obstruction planes leading to OSAHS and effectively treat mild, moderate and severe OSAHS.