Complete right bundle branch conduction block alone generally has a good prognosis and does not require any special treatment or management. The danger of complete right bundle branch conduction block secondary to other cardiac conditions comes mainly from the primary cause. Complete right bundle branch conduction block is a common arrhythmia in which cardiac conduction excitation is transmitted down through the left bundle branch when conduction block occurs in the right bundle branch, a type of bundle branch conduction block. Simple complete right bundle branch conduction block will have a subtle effect on the spacing between the left and right ventricular contractions, but it does not present with significant symptoms, does not require special therapeutic management, and has a good prognosis. Secondary right bundle branch block usually occurs in patients with coronary heart disease, rheumatic heart disease, pulmonary heart disease, hypertension and other cardiovascular diseases, the specific harm is related to the primary disease, the more serious the primary disease, the greater the harm. It is recommended that patients with right bundle branch conduction block should be actively treated for the primary disease. If patients with coronary artery disease develop complete right bundle branch conduction block, it may indicate myocardial ischemia, and it is necessary to evaluate and treat the situation of myocardial ischemia. Patients with complete right bundle branch block should go to the hospital in time and follow the doctor’s instructions to actively treat the primary disease to avoid delaying the condition.