The hazards of pregnancy sexual intercourse are mainly reflected in the following two aspects: First, it is easy to cause abortion, it is easy to stimulate the cervix during coitus, leading to pregnant women to have contractions and cause abortion. In addition, if the coitus reaches an orgasm, the woman’s whole body muscles will be in a state of relative contraction, and the uterine smooth muscle will also be contracted, so, in this case, there may also be a miscarriage. Secondly, during pregnancy due to changes in hormone levels, women’s vaginal environment is relatively fragile, if you don’t pay attention to hygiene during intercourse, it is easy to get infected, resulting in vaginal inflammatory diseases or pelvic inflammatory diseases. If the inflammation is more serious, it may cause infection, and the infection of the uterine cavity may cause miscarriage.