There are two types of inhalation medications commonly used for children with asthma: 1, quantitative aerosol inhaler such as fluticasone propionate aerosol, budesonide aerosol and salbutamol aerosol, quantitative aerosol inhaler is one of the most commonly used medications for asthma inhalation treatment, which only requires a snap of the hand to spray a fixed amount of medication. It is usually believed that children over 6 years old can master the medication method correctly through repeated teaching, but this is not the case in outpatient clinics, and often children over 10 years old cannot use it properly, so the treatment effect is not good. The treatment effect is not good. Therefore, children under 6 years old should be assisted by a fog canister to inhale drugs. 2, dry powder quantitative inhaler such as fluticasone propionate salmeterol dry powder inhaler (Sulidex), budesonide formoterol powder inhaler (Symbicort), dry powder quantitative inhaler is the use of inspiratory airflow to drive the drug powder with the airflow directly into the lungs. The dry powder quantitative inhaler is a new type of inhalation device developed after the quantitative aerosol inhaler for asthma treatment, which does not contain a projectile, and the concentration of the drug inhaled into the lungs is about 10%-30%, slightly higher than that of the quantitative aerosol inhaler, which is suitable for patients who can cooperate with inhalation. Since children mostly use inhalation medication for asthma, and children need to be taught the use method and practice repeatedly to master the correct use method, this puts forward higher requirements for doctors, who must personally teach the children themselves and their parents the correct method, and must check whether the use method is correct when the children are re-visited, so as to ensure the effective treatment of the disease.