Nose breathing problems can be improved by physical therapy, medication, and surgery. Common factors that can lead to poor nose breathing include blockage of secretions, rhinitis, nasal polyps, and so on. 1. Secretion blockage: If there is too much secretion in the nasal cavity, it may cause the narrowing of the nasal cavity, which will lead to the situation that the nose is not breathing well and always breathing through the mouth. Physical treatment, such as wiping away secretions with paper and rinsing the nasal cavity with saline, can promote the discharge of secretions in the nasal cavity, thus improving the symptoms. 2. Rhinitis: When rhinitis occurs, the nasal mucosa may become congested and edematous, which leads to poor nose breathing and always breathing through the mouth. It can be treated with medication, such as hydroxymetazoline, cetirizine, budesonide, etc. These medications can improve the symptoms by improving the congestion and edema of the nasal mucosa and reducing the resistance to airflow. 3. Nasal polyps: When there are polyps growing in the nasal cavity, it may restrict the airflow, which may lead to the situation that the nose does not breathe smoothly and always breathe through the mouth. Surgical treatments, such as simple nasal polypectomy and nasal endoscopic surgery, can be used to remove the polyps from the nasal cavity and improve the airflow restriction, thus relieving the symptoms. When you have the problem of breathing through your mouth, you should consult a doctor in time. Under the doctor’s guidance, you should improve the physical examination, nasal ventilation function test, nasal endoscopy and other tests to clarify the cause of the disease and actively treat it.