GERD does not usually cause bronchitis. However, in severe cases of GERD, in addition to esophageal symptoms, refluxed material may irritate and damage tissues and organs outside of the esophagus, causing corresponding symptoms, such as laryngitis, chronic cough, asthma, dental erosion, and in severe cases, aspiration pneumonia. Gastroesophageal reflux is a disease of the digestive system, due to the relaxation of the sphincter under the esophagus, which makes the contents of the stomach reflux into the esophagus and causes irritation to the esophageal mucosa, resulting in clinical symptoms such as acid reflux, heartburn, and the sensation of a foreign body in swallowing. Bronchitis is a disease of the respiratory system, caused by bacteria, viruses, smoking, allergies and other causes of inflammation of the trachea, bronchial mucosa and its surrounding tissues, coughing and coughing up phlegm as the main manifestations. If the patient is suspected of suffering from bronchitis, it is recommended to go to the hospital, improve the bronchoscopy and other auxiliary examinations, to clarify the cause of the disease and then give early treatment, so as not to delay the condition.