Mild hypertension is defined as grade 1 hypertension, which means that the blood pressure exceeds 140/90 mmHg, but does not reach 160/100 mmHg, which is a relatively mild elevation of blood pressure. The most common cause of mildly elevated blood pressure is primary hypertension, which is caused by obesity, poor lifestyle habits, lack of exercise, chronic stress, and large amounts of fish and meat. For mildly elevated blood pressure, the main focus is on improving lifestyle, and if there is a clear cause, the main focus is on eradicating the cause. In ordinary life, we must pay attention to control blood pressure within the normal range. Some people can lower their blood pressure to normal by improving their poor lifestyle and can be treated without medication, but some people need to choose medication to control their blood pressure below 140/90 mmHg based on lifestyle adjustment.