Incomplete right bundle branch block is a common intracardiac block in which the right bundle branch, which is responsible for cardiac conduction, is impaired or delayed. Incomplete right bundle branch block belongs to a type of intraventricular conduction block of the ECG signal, caused by damage to the distal fibers of the right bundle branch, and is commonly seen in rheumatic heart disease, congenital atrial septal defects, chronic pulmonary heart disease, coronary artery disease, myocarditis, cardiomyopathy, and acute pulmonary artery embolism. Incomplete right bundle branch block may also occur in some normal people, and the patient may have no obvious symptoms, for which no special treatment is needed. Incomplete right bundle branch block occurs in some patients with organic heart disease, weakness, palpitations and other discomforts, should actively treat the primary disease, if necessary, cardiac pacing therapy. Incomplete right bundle branch block patients should maintain a good daily routine and habits, keep a relaxed mood, and avoid too much emotional excitement. Specific diagnosis and treatment should follow the doctor’s advice.