Patients with complete right bundle branch conduction block do not produce obvious hemodynamic abnormalities, so they are often clinically asymptomatic, Patients with rheumatic heart disease, patients with congenital heart disease have symptoms such as shortness of breath after activity, shortness of breath at night when sleeping, inability to lie down, edema of both lower limbs, poor appetite, etc.; patients with pulmonary infarction have sudden onset of dyspnea, cough, syncope, shock, etc. Complete right bundle branch block is one of the common clinical arrhythmias and is one of the types of bundle branch block, which occurs in coronary heart disease, hypertensive heart disease, rheumatic heart disease, congenital cardiomyopathy, massive pulmonary infarction, post-acute myocardial infarction, etc. It can also be seen in normal people. Complete right bundle branch conduction block means that there is a problem with the bundle branch to the right ventricle and the electrical signal cannot be transmitted to the right ventricle, although this signal can still be transmitted from the left ventricle, only the contraction of the right ventricle is slightly delayed. Therefore, complete right bundle branch block itself does not produce significant hemodynamic abnormalities, so it is often clinically asymptomatic, and if symptoms do appear, they are usually symptoms of the primary disease.