An esophageal hiatal hernia is a hernia that occurs when the upper part of the stomach protrudes (herniates) into the chest cavity due to an abnormal enlargement of the “esophageal hiatus” in the diaphragm. It often causes symptoms such as acid reflux, heartburn, and regurgitation. It can also cause pain in the chest, back and abdomen. During an asthma attack when breathing is difficult, the lungs press down on the diaphragm and the esophageal hiatus widens over time. Patients with asthma often have a combination of esophageal hiatal hernia. People with a hiatal hernia are also prone to asthma attacks. This is mainly due to irritation of the throat and airway by refluxed material. Asthma attacks are particularly likely to occur when the patient is full or in a recumbent position. In mild cases of hiatal hernia, the symptoms can be controlled by paying attention to diet and lifestyle habits, such as slowing down the speed of eating, not over-eating, not lying down after meals, keeping the bowels open, and not over-tightening the waistband. When there are uncomfortable symptoms, medication can be used to assist in the treatment, such as the gastric motivation drug morpholine, inhibit gastric acid omeprazole, mucosal protector aluminum thioglycollate, etc. In severe cases, surgical treatment is required to relieve symptoms.