The epidemiological survey of asthma in children in China shows that the common triggers of asthma are, in order, upper respiratory tract infections, cold weather changes, exercise, exertion, food such as fish, shrimp, eggs, milk, etc., irritating gases such as passive smoking, paint, fumes, etc. and drugs such as aspirin, alcohol, etc. In addition, all warm-blooded animal fur, house dust mites, fungi, cockroaches, flower pollen, etc. are also triggers for some children with asthma. The high incidence of allergic asthma in children is between 1 and 6 years old, with the first onset occurring under the age of 3 and gradually decreasing after school age. The onset of pediatric asthma, especially in infants, is mainly caused by respiratory tract infections, so it is easy to be misdiagnosed as various types of respiratory tract infections. Strenuous exercise, smoke and odor stimulation, too sweet or too salty diet, and exposure to dust are also common triggers. Symptoms of pediatric allergic asthma attacks: coughing, dyspnea, sibilant wheezing sound can be heard in the throat, some parents compare this wheezing sound to the sound of a “bellows”, these symptoms are typical clinical manifestations of pediatric allergic asthma. These symptoms are typical clinical manifestations of pediatric allergic asthma. “Sudden onset and stop” is the key feature of pediatric allergic asthma that distinguishes it from other inflammatory diseases in the lungs. Asthma triggered by exposure to allergens, cold air, exercise, etc. is usually feverless; while asthma triggered by infectious factors may be accompanied by fever and corresponding symptoms of upper and lower respiratory tract infection. These symptoms may appear suddenly under the stimulation of the triggering factors, or they may be spontaneously reduced or relieved when the triggering factors are removed with good ventilation and quietness, or, conversely, the symptoms may be suddenly aggravated. In addition, asthma is more pronounced in children with a genetic predisposition to allergies, and the earlier the onset of the disease, the more pronounced the genetic correlation. Infant eczema and allergic rhinitis, as well as recurrent respiratory infections, are common complications in children with asthma and are of particular concern to physicians. Since pediatric allergic asthma is largely influenced by genetic factors, parents who have a family history of allergic asthma or allergic diseases should make effective adjustments to their children’s possible genetic allergies as early as possible. It is the first probiotic in Taiwan that has been approved by the Department of Health as an “auxiliary adjustment of national constitution” and can effectively improve the allergic constitution and reduce the incidence of allergic diseases from the root. The onset of allergic asthma is different for different age groups. In infant asthma, children are younger and less responsive to coughing than older children, so the onset is mainly wheezing. The onset of asthma in older children is mainly wheezing because they have a wide range of activities and go outdoors, especially to kindergartens, where many children have recurrent colds and are cross-infected. There are some differences between school-age children and small children, the immune function of the body is gradually normalized, because his resistance is relatively stronger, his infection is relatively reduced. The main problem is wheezing and coughing, and then wheezing, and there may be sudden attacks at night, and there are more allergic factors.