Slightly elevated blood pressure at 31 weeks of pregnancy requires rest for at least an hour before retesting one, and if persistently elevated requires oral antihypertensive medication for safer treatment. Mildly elevated blood pressure during pregnancy and can not be relieved after rest, may be gestational hypertension, this is a certain risk for pregnant women and fetus. Oral antihypertensive medications such as nifedipine and labetalol, which do not contain diuretics, are needed to control it. High blood pressure in pregnancy should also be checked for urinalysis and liver and kidney function. It is also important to check for the presence of body edema. This is mainly to exclude whether there is a state of renal function damage during pregnancy, if there is an abnormality, you can treat the intervention as early as possible. Normally high blood pressure must pay attention to more rest, do not stay up late, eat more fresh vegetables and fruits and high protein food, keep emotional stability. In addition, if the blood pressure is persistently high or the discomfort symptoms are more obvious, consult the doctor in time to determine the cause of the disease and then treat it to avoid delaying the condition.