Runkai medical nitric oxide analysis system is noninvasive and convenient. It can be detected only through the exhaled gas of patients. It is simple and convenient to operate, and has high acceptance of patients. It is helpful to the inflammatory classification and drug guidance of airway diseases such as asthma and chronic obstructive pulmonary disease. The following figure shows the training of runkai medical operators on the installation of nitric oxide analysis system in a tertiary hospital in Sichuan.