Compared with hard shell oxygen chambers, soft shell hyperbaric oxygen chambers are very light and have a relatively low price. Soft shell hyperbaric chambers for sports recovery and physical therapy can meet the daily health care needs of different families. Portable soft shell hyperbaric chambers use a dual safety mechanism of electronic and mechanical pressure relief valves. This can achieve accurate and stable control of the oxygen chamber pressure. At the same time, the oxygen concentrator can detect the oxygen concentration in the chamber in real time. When the oxygen concentration exceeds the warning value, forced ventilation will be performed to ensure the safety of the user.