If the blood pressure in the left arm is elevated, if the difference is particularly large compared to the right arm, it may be caused by heart disease, and it is necessary to go to the hospital in a timely manner to do detailed examinations such as electrocardiogram, ambulatory electrocardiogram and cardiac ultrasound, and according to the results of symptomatic treatment. If the difference is similar, it may be a normal phenomenon. The blood pressure of the left and right upper limbs is not the same, there will be a certain difference, according to the specific value to decide the treatment plan, patients should not blindly nervous, anxiety, pay attention to rest, avoid strain, low salt, low fat, light diet, blood pressure control within the normal range, there is no big problem.