55-year-old man high pressure 90mmHg low pressure 60mmHg, pulse 70 times / min normal. The normal value of blood pressure for systolic blood pressure 90 ~ 120mmHg, diastolic blood pressure 60 ~ 80mmHg, pulse 60 ~ 100 times / min in the normal value range. Normal value within the range of low blood pressure can be adjusted through diet, pay attention to balanced nutrition, usually appropriate to increase the intake of high-quality protein foods, such as eggs, milk, beef, fish, etc., early in the morning can be a small amount of salt water, eat more vegetables, such as cucumbers, carrots, cabbages, etc., to strengthen the exercise, improve physical fitness. It is important to drink more water, exercise and strengthen nutritional support, such as drinking 2000 ml of water per day and exercising 3 to 5 times a week. If the blood pressure cannot be raised by improving the lifestyle and there are symptoms of dizziness and black eyes, it is necessary to consult a doctor in time. It should be noted that although the blood pressure is in the normal, but does not mean that the state of health, can still occur in some diseases or in the latent period when suffering from diseases, if the patient has any discomfort, need to consult a doctor in a timely manner.