The air-oxygen blender SPA is a device for medical staff to use different concentrations of mixed oxygen for oxygen therapy and rescue measures. It is suitable for neonates, especially premature infants, due to long-term inhalation of high-flow and high-concentration oxygen caused by oxygen damage and other diseases, such as It is used in the treatment of retinopathy of prematurity (ROP) and chronic lung disease (CLD). The product meets the requirements of "Guidelines for Oxygen Use in Treatment of Premature Infants and Prevention and Treatment of Retinopathy": a device with a mixture of air and oxygen must be used. During the process of oxygen therapy, it is required to strictly grasp the indications of oxygen use and the method of oxygen supply, and do a good job of monitoring and monitoring. The oxygen concentration needs to be adjusted in time according to the condition to avoid excessive fluctuations