If you have intercourse on the second day of normal labor, the cervix of the mother is not completely closed at this time, because the uterus, cervix, and vagina have not fully recovered after normal labor, the cervix and vagina even have wounds, and the blood sinuses are open at this time, if you have intercourse on the second day after normal labor, it will cause poor wound healing and increase the risk of pelvic infection and poor wound healing. Intercourse may increase the chances of postpartum bleeding and puerperal infection, causing the endometrial lining to shed faster, which in turn leads to increased bleeding and may cause poor contraction of the uterus to occur. In addition, it may easily cause retrograde bacterial infection, which may lead to serious consequences such as acute endometritis, tubitis, or even acute pelvic inflammatory disease. Therefore, in this case, the mother should pay attention to her condition, such as fever, abdominal pain, increased bleeding abnormalities, should promptly go to the hospital gynecology department, improve the blood picture, white belt routine and other tests, and give appropriate treatment. Pay attention to suspend breastfeeding during the period. Note that mothers need to avoid having sex too early to avoid puerperal infection and affecting the recovery of the uterus. It is recommended to review after 7 weeks of normal delivery and let the doctor confirm that the recovery is good before having sex. Generally, you can have sex only after two months after delivery, when the dew is completely clean and the uterus has recovered normally. At the same time, you should pay attention to personal hygiene, change your underwear regularly and keep your vulva clean and dry.