Etiology classification: 1. Various organic diseases causing right heart failure: chronic pulmonary heart disease, pulmonary embolism, congenital heart disease including primary pulmonary hypertension, pulmonary stenosis E-bstein malformation, Eisenmenger syndrome, rheumatic heart disease including tricuspid stenosis and/or tricuspid valve closure insufficiency, restrictive cardiomyopathy; 2. Mainly manifestations of increased venous pressure in the body circulation. The filling external jugular vein can be seen in the supraclavicular position in semi-recumbent or sitting position, with positive dry neck regurgitation sign, and increased filling of the jugular vein can be seen when compressing the enlarged liver, which is an earlier manifestation of right heart insufficiency, and in severe cases, the patient’s arm or other superficial veins can also be seen to be filled and angered; 3, pericardial disease: pericardial effusion, constrictive pericarditis; 4, superior vena cava syndrome. Mechanism: When the right atrial volume increases or pressure rises due to the above causes, venous stasis venous pressure rises and superior vena cava reflux is obstructed, it can cause jugular vein anger. 1, right heart failure: pulmonary heart disease, congenital heart disease and rheumatic heart disease can lead to right ventricular preload overload and cause right heart failure, so that the body circulation stasis; 2, restricted filling of the heart chambers: normal intrapericardial cavity pressure is lower than atmospheric pressure, but also lower than atrial pressure and ventricular diastolic pressure. When the pericardial exudate accumulates rapidly and/or the amount of exudate exceeds a certain level, the intrapericardial pressure rises sharply, or the pericardium thickens and stiffens. Fibrosis, so that the pericardium narrows and the whole heart and the exit of large blood vessels are compressed, preventing ventricular diastole and filling affecting blood return to the right heart and raising venous pressure; 3. Obstruction of the superior vena cava, so that the superior vena cava reflux is blocked, causing jugular vein anger