The causes of low blood pressure in women may be related to genetics, low weight and estrogen stimulation, as follows: 1. Genetics: low blood pressure in women is mostly related to family genetics; 2. Low weight: more women in adolescence are thin and have lower blood pressure; 3. Estrogen influence: estrogen can make the peripheral blood vessels dilate and reduce the main blood vessels or the effective blood volume drops, resulting in low blood pressure, which has a protective effect on women . For women’s blood pressure has a normal range, systolic blood pressure in 140-90mmHg, diastolic blood pressure in 90-60mmHg, even if the blood pressure is low to consider the lower limit systolic blood pressure 90mmHg, diastolic blood pressure is 60mmHg. if lower than the standard value, need to go to the hospital to have a detailed examination, and give some intervention, otherwise it will cause damage to the perfusion of the heart, brain, liver, kidney organs.