The People's Hospital of the Inner Mongolia Autonomous Region demonstrated preparations for the construction of a hyperbaric oxygen chamber in December 2016, and it was officially built and put into clinical use in October 2017. Since its establishment, the department has insisted on focusing on medical care and serving patients. It has carried out multi-disciplinary and multi-hospital cooperation, forming a distinctive specialty integrating medical treatment, teaching, and scientific research. It keeps up with the development frontiers of hyperbaric oxygen medicine at home and abroad, and is committed to using hyperbaric oxygen therapy to promote patient recovery and health management. The department currently has a modern multi-person air cabin, which is controlled by electronic computer and equipped with advanced monitoring system, air conditioning system and fire extinguishing system to ensure the comfort and safety of patient treatment. The department is also equipped with the only animal testing chamber (high and low pressure multi-purpose chamber) in Inner Mongolia to ensure the smooth progress of clinical and scientific research work. The department has a professional and technical team with reasonable age structure and excellent quality. There are currently 6 medical staff and 1 technician, including 1 master's degree tutor, 3 staff with senior professional titles, and 3 with intermediate technical titles. Since its operation, the department has achieved no accidents, no mistakes, and no disputes.In 2021, it became the presiding unit of the Hyperbaric Oxygen Branch of the Inner Mongolia Medical Association, cooperating with the Inner Mongolia Medical Association to organize on-the-job training for hyperbaric oxygen practitioners in the region. At the same time, it serves as the R3 certification operation base of the Inner Mongolia Special Inspection Institute, responsible for the practical training and examination of R3 certification personnel in the region. Since its establishment, the department has focused on the treatment of carbon monoxide poisoning and delayed encephalopathy. It has treated nearly a thousand patients in total, with a total effective rate of 99.2%. In recent years, we have actively carried out treatment for brain function damage after cardiopulmonary resuscitation, severe craniocerebral injury, and persistent vegetative state. We have routinely provided treatment for more than 20 diseases such as sudden deafness, cerebral infarction, delayed fracture healing, radiation damage, infectious diseases, diabetic foot, insomnia, tinnitus, anxiety, and fatigue. We also carry out pressurization training for workers in high-pressure environments, divers, and diving enthusiasts.