In medical theory, coitus is not recommended during pregnancy. However, few couples can insist on the long process of carrying a baby for 10 months, therefore, under the premise of not affecting the fetus, it is appropriate to have intercourse. Specific as follows: 1, early pregnancy appropriate to reduce intercourse: early pregnancy refers to the first trimester of pregnancy, due to the female endocrine influence and early pregnancy reaction, coupled with the safety of the fetus in the belly, should reduce the requirements and frequency of intercourse. In the early stages of pregnancy, the fetal organs are developing, the placenta is not yet mature, the connection between the placenta and the uterine wall is not yet tight, plus the progesterone secretion to prevent miscarriage is insufficient to give strong protection to the fetus, at this time, intercourse may lead to miscarriage. If you want to have intercourse, you must choose the right position, and avoid rough or too intense during intercourse; 2, the middle of pregnancy can be appropriate intercourse: the placenta has formed during this period, the fetal situation is more stable, can be appropriate intercourse. Not only can enhance the couple’s feelings, but also can help the healthy development of the fetus. Also need to pay attention to the position and frequency of intercourse to avoid adverse effects on the fetus, 1-2 times a week is appropriate; 3, late pregnancy to avoid intercourse: late pregnancy refers to the second trimester of pregnancy, the pregnant woman’s abdomen has increased significantly, the size and weight has also undergone significant changes, at this time the pregnant woman’s body is bulky, libido, increased sensitivity of the uterus, if not pay attention to intercourse, the uterus can be due to external stimulation, which produces If we do not pay attention to intercourse, the uterus can be strongly contracted due to external stimulation, leading to preterm labor. In summary, although part of the pregnancy period can be intercourse, but must master the proportion, intercourse time and intensity should be appropriate, gentle action, understanding wife, and should pay attention to intercourse hygiene.