Leg swelling in patients with heart disease is mostly considered a stasis of blood in the body circulation, and often occurs in patients with right heart failure. Patients with right heart failure may have signs of jugular venous filling and anger, and patients may develop edema in both feet and legs, which gradually spreads to the whole body. Patients can have pleural effusion, abdominal effusion, and other related conditions, often associated with right heart insufficiency. The symptoms associated with obstructed venous return need to be differentiated from diseases such as lower extremity venous thrombosis. It is recommended that ultrasound examination of the veins of the lower extremities be performed to further clarify the condition. For heart disease leg swelling considered cardiac insufficiency, comprehensive treatment is needed, including diuretic-based renin-angiotensin system inhibitors, beta-blockers and, if necessary, a combination of cardiotonic drugs.