Right bundle branch conduction block is divided into complete right bundle branch conduction block and incomplete right bundle branch conduction block according to the degree of block. Complete right bundle branch block means that the right bundle branch that transmits to the right ventricle is faulty and the bioelectrical signal cannot be transmitted directly to the right ventricle, but it does not matter, the electrical signal can be transmitted from the left ventricle, only the right ventricle contraction is slightly delayed. Complete right bundle branch block does not necessarily have extensive myocardial damage, and is often not significant if it is not associated with other organic heart disease. If you have no organic heart disease on further medical examination, incomplete right bundle branch block is usually of no pathologic significance. Since there is no pathological significance, i.e., a normal healthy lifestyle will not affect it. In the normal heart, the right bundle branch conduction period is about 16% longer than that of the left bundle branch. Among the conduction periods of each branch, the right bundle branch is the longest, and in order, the right bundle branch > left anterior branch > left posterior branch > left septal branch. The difference in conduction velocity between the left bundle branch and the right bundle branch was within 25 ms, and the QRS waveform was normal. When the conduction velocity of the right bundle branch is 25-40ms slower than that of the left bundle branch, the QRS time frame may be slightly widened and the graphical change of partial conduction block may occur, i.e. incomplete right bundle branch conduction block. If it exceeds 40ms (mostly in 40-60ms) or right bundle branch block conduction interruption, the QRS time limit will be significantly widened (time limit ≥120ms), which means complete right bundle branch conduction block will be produced. The prevention focus is as follows: 1, active treatment of the cause, such as for coronary artery disease, hypertension, pulmonary heart disease, myocarditis and other treatment, can prevent the occurrence and development of intraventricular block. 2.Appropriate labor and rest, diet in moderation, on-time living, appropriate participation in physical exercise. 3, the diet should be light, pay attention to hygiene, reasonable match meals.