Generally, cardiogenic edema first appears in the lower part of the body, and if the patient is standing frequently, the edema will first appear in both lower extremities, mainly below the knee joint, especially in the ankle, dorsum of the foot and the anterior tibia. If the patient is bedridden for a long time, the back may also be the first to show edema, which is less common in patients who frequently turn and knock their backs. Patients may present with sunken edema, and the skin may not rebound well when pressed locally. As the disease progresses, the edema may spread to the whole body, and sometimes pericardial effusion and pleural effusion may appear, which can be diagnosed by ultrasound. In the case of right heart insufficiency or total heart failure, it manifests as body circulation stasis, which may appear as swelling of the lower limbs, liver stasis and enlargement, and jugular vein anger, etc. The goal of treatment is to reduce the right heart anterior-posterior load and treat the primary disease.