The standard blood pressure for men aged 30-40 years is 120/80 mmHg, should not exceed 140/90 mmHg, and should not fall below 90/60 mmHg. When blood pressure fluctuates abnormally, it should be taken seriously, the cause should be identified, and blood pressure should be controlled within the ideal range to avoid blood pressure-related diseases. When a man’s blood pressure remains high, it is important to determine whether he has hypertension and to identify the factors that cause it to rise. First, hypertension can be influenced by genetic factors, and when both parents have hypertension, the chances of having a child with hypertension are greatly increased. Secondly, men’s smoking and drinking habits can accelerate atherosclerosis and lead to higher blood pressure. And, if the long-term poor dietary habits, high salt food intake, will lead to water sodium retention in the body, thus causing blood pressure to rise. In addition, for men with long-term poor sleep habits and poor sleep quality, it can also reflexively cause blood pressure to rise. When men have long-term malnutrition, endocrine disorders, anemia and other reasons can lead to the emergence of low blood pressure, and the presence of some organic lesions can also lead to lower blood pressure, should be given great attention. Therefore, when there are abnormal fluctuations in blood pressure, the cause should be clarified in a timely manner, under the guidance of a doctor to use appropriate methods to control blood pressure at a reasonable level to avoid adverse symptoms.