Self-rescue means saving oneself, requiring asthma patients themselves and their family members to have simple knowledge of daily protection and treatment of asthma, such as mosquito medicine in summer, the patient smells and then suddenly has an asthma attack, at which time the patient and family members should realize that the measures that need to be taken immediately are to get out of this environment, to get away from irritants and allergens, which is the most important means of asthma self-help. Secondly, in the patient’s pocket and bag, asthma patients should have self-help medicine, clinically called Ventolin, also called salbutamol aerosol, take out salbutamol aerosol to the patient’s mouth and spray 2 times continuously, inhale it, sometimes asthma can soon be significantly relieved. If a seriously ill patient repeatedly sprays salbutamol several times and still cannot be relieved, then the family needs to call 120 and ask the hospital and doctor for emergency treatment.