Patients with asthma, in general, is appropriate to place humidifiers indoors is possible. Humidifiers placed indoors can regulate the humidity of the air and prevent the air in the room from being too dry, especially if the patient is allergic to dust and dust mites, you can use a humidifier that can moisten the air and enable the dust and dust mites in the air to settle and not float in the air, which can prevent the patient from inhaling into the airways and triggering an acute attack of asthma, avoiding the symptoms of wheezing, shortness of breath and chest tightness. If necessary, you can also add natural herbs that the patient has clearly no allergy to and have certain soothing plant nerve function, such as lavender and rosemary, etc., which can to a certain extent relieve the patient’s emotional tension and prevent the airway from appearing in a hyper-reactive state.