It is sometimes difficult for patients to determine whether their asthma is under control. There are many ways to assess this, including complex and relatively simple ones. The main assessment is from several aspects: 1. whether there are daytime symptoms, such as whether they cough during the day, and whether they feel shortness of breath or can’t get up to the air after activity; 2. whether they have nighttime symptoms, i.e. they also cough and have shortness of breath at night, and even wake up because they can’t get up to the air; 3. whether they need emergency medication, i.e. whether they have a cough or need medication such as Ventolin to relieve their symptoms; 4. whether they feel that their life, exercise and work are affected because of asthma work. If none of these 4 items are present, it is well controlled. If 1-2 items are present, it means that it is not fully controlled, it is partially controlled. If all of these items are still basically present, it is probably not under control, and in this case you need to seek early medical attention and work with your doctor to find the cause.