Hyperbaric oxygen therapy is a method of treating diseases by inhaling pure oxygen or highly concentrated oxygen in an environment with a pressure higher than one atmosphere. At present, the oxygen chamber can be divided into air pressurized chamber and oxygen pressurized chamber according to the pressurized medium, among which the multi-person chamber is almost always air pressurized chamber, while the infant chamber and single-person chamber are oxygen pressurized chamber. The concept of air pressurized chamber is to inject compressed air into the oxygen chamber, and after stabilizing the pressure, the patient will wear a mask to breathe pure oxygen to treat the disease. With the improvement of oxygen chamber technology, the oxygen chamber is now equipped with lighting, communication, monitoring and air conditioning systems. In addition, for tracheotomy, critical, neonatal, elderly, and frail patients, the oxygen chamber is also equipped with sputum suction device, full cardiac monitoring device, micro-resistance oxygen suction and oxygen humidification device. The oxygen chamber is functionally divided into a treatment chamber and a transition chamber. In case of emergencies, medical staff can enter the chamber in time and patients can be decompressed in time to leave the chamber. All facilities are designed to ensure that patients can safely, comfortably and effectively complete their treatment.