The 42-day postpartum checkup is usually a gynecological examination to understand the color, amount and odor of the malodorous fluid, the healing of perineal wounds (abdominal wounds), the recovery of the cervix and uterus, the presence of pressure pain, and the presence of pressure pain and swelling on palpation of both adnexa. If you have complications such as hypertension, gestational diabetes, anemia, etc., you should also check the corresponding indexes, measure blood pressure, check urine protein, hemoglobin, blood sugar, etc. Women with gestational diabetes also need to have a 75g glucose tolerance test 6-8 weeks after delivery. It is clear that gestational diabetes is still diagnosed, and further guidance from internal medicine is needed for treatment. If the blood pressure is still high and proteinuria is still present, further examination and treatment in internal medicine may be required. Therefore, it is necessary to review 42 days after delivery. Most women can return their uterus to the pre-pregnancy state after a period of recovery during the menstruation. Therefore, regardless of whether the delivery was by normal or cesarean section, it is recommended that each woman should go to the delivery hospital for a follow-up examination about 42 days after delivery to find out whether the reproductive system has returned to its pre-pregnancy state, whether complications during pregnancy still exist after delivery, and whether further treatment in internal medicine is needed.