The nebulizer is placed on the nebulizer by inhaling the nebulizer into a syringe and then injecting it into the nebulizer. For example, the nebulizer medicine such as albuterol is inhaled into the syringe and then injected into the nebulizer, connected to the nebulizer mask, covering the mouth and nose, and the valve is opened for use. When opening the valve, the airflow should not be too large to avoid symptoms such as chest tightness. Generally inhale deeply, try to make the drug reach the bronchial tubes, do not exhale immediately after inhalation, you can let the gas stay in the lungs for two seconds, so that the drug is fully absorbed. Care should be taken not to apply face cream before nebulization, which will easily cause the drug adsorption on the face, which will affect the nebulization effect and irritate the face. Wash your face and rinse your mouth in time after nebulization to prevent the drug residue on your face from causing eczema. After nebulization, the nebulizer should be cleaned and disinfected. Rinse your mouth and drink more water after nebulization to prevent drug residue on the face and mouth. If patients have adverse reactions such as chest tightness, shortness of breath, palpitations (rapid heartbeat, often accompanied by panic) after using the nebulizer, it is recommended to go to the hospital for checkups, and not to blindly use the medication on their own to avoid adverse effects.