Asthma can be categorized as “asthma” or “croup” in Chinese medicine. Mealybugs can treat asthma caused by deficiency of the lungs and kidneys, but it is not suitable for all asthma patients. Mealybug is a kind of traditional Chinese medicine, which is salty in taste and flat in nature, and belongs to the lung and kidney meridians. It has the effect of tonifying the lungs and kidneys, relieving asthma, and assisting the yang and essence. It is used in the treatment of lung and kidney insufficiency, prolonged cough and asthma, coughing up blood with exertion, kidney yang insufficiency (lack of yang qi in the kidneys), deficiency of essence and blood, impotence and spermatorrhea. The adverse effects of the drug are not clear. It is forbidden to be taken by people with external wind-cold cough and Yang deficiency. It can be seen that mealybugs can treat asthma. However, not all asthma patients are suitable for the use of mealybugs, only by a Chinese medicine practitioner to identify belongs to the lung and kidney deficiency caused by the deficiency of asthma can be used, and belongs to the wind-cold, phlegm-heat, phlegm-dampness asthma is not suitable for the use of mealybugs. Chinese medicines should be used after identification by a professional Chinese medicine practitioner, and should not be used blindly on one’s own to avoid aggravation of the condition or adverse reactions.