Couple love during pregnancy generally refers to pregnancy coitus, proper coitus during pregnancy has the benefit of promoting the development of the fetus. Women can properly cohabit during pregnancy, but to master the cohabit time, generally recommended to avoid sex in the early pregnancy and the second trimester 3 months, the middle of pregnancy 4-6 months can be appropriate sex. Mid-pregnancy placenta is basically fixed, the development of the fetus is stable, the early pregnancy reaction is also gradually reduced or disappeared, at this time appropriate coitus can stimulate the uterus slight, rhythmic contraction, can accelerate the blood circulation of the placenta, so that the fetus in the uterine cavity to obtain more blood and nutrients, which will help the growth and development of the fetus. Moreover, pregnant women are in a happy mood during coitus, which is also beneficial to the development of the fetus. Reasonable coitus during pregnancy is beneficial, but we should pay attention to the number of sexual intercourse can not be too frequent, do not press the abdomen, such as coitus when abdominal pain or vaginal bleeding phenomenon should be stopped in a timely manner, to avoid leading to accidental abortion.