At present, the air purifiers sold in the market are mixed, so consumers should consider the purification method, purification technology, filter screen, airflow design, humidification function and so on. In addition, more and more health experts advocate the use of air purifiers to prevent the breeding of harmful substances in the air, purify the air and achieve the purpose of health preservation. The air conditioner has the function of air purifier, and it also plays a "healthy" selling point. Whether it can be maintained depends on whether the negative oxygen ion content in the air increases in the machine. This substance is a unique and beneficial component of natural forests. Xinfenggu air purification and health-preserving machine has a built-in plasma generator, which can generate negative oxygen ions with gold concentration, make natural beneficial ingredients, and contribute to the physical and mental maintenance of human body. Sleeping comfortably in such an environment for a long time can make people feel happy, thus achieving the purpose of health care.