If a patient with coronary artery disease has swollen feet, it usually indicates a serious condition. Patients with coronary artery disease who have persistent high blood pressure and sodium retention will have varying degrees of swollen feet. In addition, in patients with coronary artery disease, if unstable angina occurs for a long time, it may cause heart failure, especially in right heart failure with varying degrees of foot swelling, accompanied by weakness, gastrointestinal bruising, gastrointestinal bruising, abdominal distention, anorexia, vomiting, etc. Patients first develop edema in both feet, legs and ankles, which gradually spreads upward to the periphery and is directly related to the patient’s bruising of the body circulation. The presence of swollen feet in patients with coronary artery disease is a serious condition.