The oxygen generator is mainly used for respiratory diseases, cardiovascular and cerebrovascular diseases, hypoxia, etc. Domestic oxygen generator mainly plays a health care role, improving the oxygen environment of human body, promoting metabolic cycle and relieving physical discomfort caused by hypoxia. However, the actual use of oxygen generators at home needs to be standardized. To choose qualified big brands, Haier's oxygen generators must be good and the user experience should be excellent.