According to evidence from evidence-based medicine, it is possible to have sex during pregnancy, unless there is a pre-eclampsia or placenta praevia and there is heavy vaginal bleeding during pregnancy, during which time sex is not allowed, but most of the other times sex is allowed. It is not desirable or realistic for normal male friends or normal female friends to have sex after pregnancy because they cannot have sex for up to 10 months. So when pregnant sex life precautions are: 1, can change position, for pregnant women abdominal impact is relatively small position; 2, the action amplitude should not be too large. In conclusion, the ACOG, the American College of Obstetricians and Gynecologists, supports pregnant women to have sex during pregnancy in its recommendations for parents-to-be.