Generally speaking, 20 days is not enough to get out of the month, and it takes 42 days to get out of the month. The menstruation period is the puerperium, is the time for the mother to return to the normal state of not pregnant, generally need 42 days, 20 days after the birth of the mother’s body has not fully recovered, still need to continue to recuperate. But at this time the mother can move freely, but also pay attention to a reasonable diet, appropriate increase in protein-rich foods, such as meat, eggs, poultry, etc., and to ensure that the appropriate fresh fruits and vegetables. During the puerperium, you should also pay attention to proper rest, keep the vulva clean and dry, keep the room clean and ventilated, and wear loose and comfortable cotton clothes. Under the guidance of the doctor, appropriate postnatal rehabilitation exercises to promote the recovery of the pelvic floor and abdominal muscle tone, to observe the discharge of bad dew, and follow the doctor’s instructions on time for review.