1. Epidemiological studies have shown that dust mites are a risk factor for the development of asthma. In the vast majority of the world, the most important and persistent risk factor in the development of asthma is dust mite allergy. 2, The development of dust mite induced allergic asthma is interrelated with genetic predisposition, environmental triggers and allergen exposure: patients develop allergy under the combined effect of three factors: environmental triggers, genetic predisposition and exposure to allergens, and asthma symptoms can occur if re-exposed to allergic principles. 3. In patients allergic to dust mites, the severity of asthma symptoms correlates with the level degree of exposure. 4, Asthma patients allergic to dust mites, not exposed to dust mite environment after asthma occurred significantly reversed, symptoms and lung function improved, airway inflammation and hyperresponsiveness are reduced. 5, Control of dust mite allergens has a significant effect in asthma prevention and treatment.