Heart disease patients vomiting blood may be due to a variety of reasons, including acute pulmonary edema and the use of anticoagulant drugs, as follows: 1. Acute pulmonary edema: For the end stage of heart disease, including left heart failure, right heart failure. Left heart failure can present varying degrees of dyspnea, of which the most serious state is acute pulmonary edema, patients can appear coughing, coughing sputum, hemoptysis, so heart disease patients hemoptysis may be due to acute pulmonary edema. 2, the use of anticoagulant anti-drugs: for heart disease, such as coronary heart disease patients, often need to use anticoagulant antiplatelet drugs, in the use of the process there is a tendency to bleeding, including upper and lower gastrointestinal tract Bleeding while manifesting as vomiting blood, black stool and other conditions, need to give a systematic differential diagnosis. In patients with heart disease, such as atrial fibrillation and other arrhythmias, anticoagulant drugs need to be given. In the case of warfarin overdose, it can cause abnormalities in the coagulation mechanism, and blood vomiting can also occur.