Low blood pressure is not higher than 90, not less than 60 is normal. Normal low blood pressure, such as no anemia, malnutrition and other diseases, and no dizziness and other symptoms, there is no need to worry about, not a pathological state.
Suggestions:
Dietary advice can be appropriate to eat more salty food, because salt can make blood pressure rise. Drink more water every day, more exercise can increase blood volume, but also eat some cinnamon meat, jujube, red beans and so on.