The harm of right deviation of cardiac axis should be analyzed according to the actual situation, which is generally no obvious harm in normal people, and chest tightness and other discomforts may occur if it is seen in right ventricular hypertrophy. 1. Normal people: mostly seen in long and thin young people, young body can also appear, generally no obvious harm, regular review can be. 2. Pathologic factors (1) Left posterior bundle branch block: mostly caused by organic lesions, may cause cardiomyopathy, arrhythmia and other hazards, electrocardiogram can be manifested as Ⅰ, V5, V6 leads of the normal ventricular septal depolarization wave disappeared, if there is no clinical symptom of the general can be left untreated. (2) Right ventricular hypertrophy: it may lead to right heart failure, etc. If it is caused by pulmonary heart disease, it is necessary to use spironolactone, digitalis and other drugs to control heart failure. If the electrocardiogram suggests that the electrical axis is deviated to the right, further cardiac ultrasound should be performed, and if there is organic disease, appropriate treatment should be chosen under the guidance of a professional doctor to prevent the progression of the disease from affecting the prognosis.