Hepatic jugular venous reflux sign is a condition called hepatic jugular reflux sign in patients with right heart failure in which the jugular vein fills more significantly when pressure is applied to the enlarged liver. The most common cause is right heart insufficiency and right heart failure, in which the jugular vein fills more significantly because the right atrium is stagnant or the diastolic function of the right ventricle is limited and cannot fully accept the blood flowing back into the heart through the vein. The hepatic jugular venous reflux sign is a very important sign in clinical practice and is often clinically helpful in diagnosing right heart function and right heart failure in patients with right heart failure. If it is positive, the possibility of right heart failure is considered to be high, and symptomatic treatment such as cardiac diuresis and vasodilatation is needed actively, and the specific cause of the disease needs to be clarified and targeted after finding the cause.