If the blood pressure is normal in the morning and high at noon, it is recommended to measure the blood pressure at rest for three consecutive days at three different time intervals to see if the systolic blood pressure exceeds 140mmHg and/or the diastolic blood pressure exceeds 90mmHg or more in order to consider the possibility of high blood pressure. When diagnosing hypertension, blood pressure must be measured several times, at least three times not on the same day, systolic blood pressure exceeds 140mmHg, and/or diastolic blood pressure exceeds 90mmHg or more in order to be diagnosed as hypertension, and only one time blood pressure increase can not be diagnosed, but need to be followed up and observed. Secondly, blood pressure is normal in the morning and rises in the middle of the day, may also be affected by diet, emotion, exercise, etc., which is a normal fluctuation phenomenon, or it may be high blood pressure, it is recommended to go to a regular medical institution for examination. Usually, you should have a reasonable work and rest, try to eat a light diet, less oil, less salt, moderate physical exercise, keep your weight within a healthy range, maintain a good balance of the mind, check your blood pressure regularly, and consult a doctor if you are not feeling well.