Oxygen concentrator for hyperbaric oxygen chamber has a high oxygen delivery pressure. It can deliver more than 90% oxygen concentration into the hyperbaric oxygen chamber at 1.3ATA.The small scale oxygen concentrator has two screens inside and outside that can be controlled simultaneously. Users can set it by themselves in the chamber and the staff outside the chamber can also set it. At the same time, physical therapy oxygen concentrator can monitor the air pressure, temperature and oxygen concentration in the hyperbaric oxygen chamber in real time and make timely adjustments to ensure the safety of users.