Uncomfortable stomach and breathlessness and dyspnea are considered to be related to digestive system diseases, respiratory system diseases and heart diseases. 1. Digestive system diseases: If there are diseases of the digestive system, such as gastritis, peptic ulcer, gastric mucosal polyps, reflux esophagitis, malignant tumors, it will have an impact on the function of the stomach, resulting in stomach discomfort. For example, reflux esophagitis may cause nausea and vomiting, accompanied by chest tightness and shortness of breath, resulting in the patient being unable to breathe. 2. Respiratory diseases: Diseases of the respiratory system, such as bronchial asthma and bronchial dilatation, can sometimes cause stomach discomfort and lead to respiratory difficulties. 3. Heart disease: If there is a heart disease, such as heart failure, myocarditis. The heart is located on the left side of the chest cavity, and there is some overlap with the stomach position. Heart discomfort may lead to stomach discomfort in patients. A heart attack can have an impact on the pumping function of the heart, leading to a decrease in the amount of blood returned to the heart, which can lead to symptoms of dyspnea. Stomach discomfort accompanied by dyspnea and dyspnea is considered to be related to the above diseases, and it is recommended to go to the hospital in time to understand the cause of targeted treatment.