The blood pressure of the right arm is 20mmHg higher than that of the left arm, if it is due to physiological reasons, there is no need for special treatment, and if there are pathological factors, you need to consult a doctor in time for treatment. 1. Physiological factors: generally most normal people’s blood pressure on both sides of the arm is different, the general difference is about 10-20mmHg, some people’s left arm is higher than the right arm, and some people’s right arm is higher than the left arm, long-term measurements have no significant changes, and there is no special discomfort on follow-up, which is a physiological factor, and therefore does not require any special treatment, and there is no need to be too concerned about it. 2. Pathological factors: for diseases that can cause significant differences in blood pressure measurements in both arms, such as aortic coarctation, stenosis of the subclavian artery, arteritis, etc., can cause the right arm blood pressure is higher than that of the left arm by 20mmHg, at this time, the patient may have chest pain, tightness in the chest, shortness of breath and other discomforts, and need to consult the doctor in time, according to the cause of the disease treatment. For example, patients with aortic coarctation need analgesia, blood pressure control or surgery; subclavian artery stenosis can be treated with interventional therapy; arteritis can be treated with anti-inflammatory therapy. If there is a significant difference in blood pressure between the two arms, and accompanied by obvious symptoms, it is recommended to consult a doctor in time, under the guidance of a physician for treatment.