Pregnant women can properly cohabit after the third trimester, but should pay attention to gentle movements. Early pregnancy due to embryonic development is not yet stable, coitus will increase the risk of miscarriage, to prohibit coitus. But when the third month due to the placenta has been formed, fetal development has been basically stable, so after the third month can be appropriate cohabitation, but pay attention to can not move roughly, but also appropriate control frequency, and pay attention to can not be pressed to the abdomen of pregnant women. After the middle of pregnancy into the rapid growth and development of the fetus period, to ensure that the intake of nutrients in sufficient quantities. As the development of the fetus has been stabilized at this time, for low-risk pregnant women can also be maintained under the guidance of the doctor a moderate amount of physical exercise, such as walking, pregnancy yoga, etc., can control weight gain, reduce the risk of pregnancy, and is conducive to natural delivery. Pregnant women should pay attention to prenatal checkups during pregnancy, actively listen to the advice of professional doctors to do a comprehensive nursing care, pay attention to rest, and at the same time should relax, to avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.