Asthma is a common pediatric disease, clinical manifestations of recurrent cough, wheezing, shortness of breath, chest tightness; to the night or early morning coughing and wheezing aggravated, seriously affecting children’s life, learning. Once the above symptoms appear, it is necessary to consult a doctor. Allergen testing is very important in the diagnosis and treatment of pediatric allergic asthma. Only when the allergen is detached, the treatment is meaningful. Allergens are divided into two groups, the respiratory group and the food group. Common allergens in the respiratory group are dust mites, ragweed pollen, grass pollen, artemisia pollen, molds, cat hair, dog hair, etc. Common allergens in the food group are eggs, milk, beef, mutton, shrimp, river crabs, mangoes, oranges, etc. If the test result is positive, it is necessary to check for allergens. If the test result is positive, measures must be taken to avoid exposure, for example, if the food group is positive, these foods should be banned during the onset of the disease; if the respiratory group is positive, the house should be kept ventilated, avoiding living in humid environments for a long period of time, and less frequent visits to parks, meadows and other pollen gathering places, and pets, flowers and plants in the home should be eliminated. For children with asthma, in addition to testing allergens, lung function tests are also necessary. First, lung function can further confirm the diagnosis of the etiology and location of chronic cough. Second, it assesses the severity of asthma, determines the severity of airway obstruction, and monitors disease progression. Furthermore, it can be used as an indication to stop medication in children recovering from asthma. Common types of asthma: 1, cold asthma: symptomatic coughing and wheezing, laryngeal croup, sputum foam, cold limbs, nasal congestion and clear runny nose, the hospital coughing and stopping the combination of treatment. 2, hot asthma: symptoms of coughing and wheezing, high voice and interest surging, throat rumbling, sputum thick yellow, body heat, face red, throat red, constipation, the hospital can be treated by clearing the lung combination.