The 42-day postpartum review should be conducted in the Obstetrics and Gynecology Department, or in the Obstetrics and Gynecology Department if there is no strict distinction between the two. The main purpose of the 42-day postpartum checkup is to check the recovery of the uterus after delivery, and ultrasonography, routine blood tests, routine urinalysis and so on need to be perfected. These examinations can be performed in the obstetrics department, as puerperal examinations are also performed by obstetricians, so if there are hospitals that do not strictly distinguish between these examinations, you can also consult the obstetrics and gynecology department. Ultrasonography includes uterine adnexa ultrasonography and pelvic floor ultrasonography. The former can clarify the situation in the uterine cavity to avoid the retention of placenta membranes and other residuals, and it can also understand the recovery of the uterus. The latter can perform a preliminary assessment of the pelvic floor muscles to understand whether there are pelvic floor dysfunctional diseases. Blood and urine routine can understand the general condition of the mother. It is necessary to have a review on the 42nd day after delivery, and the mother must do it on time, and the review must be carried out in a regular hospital.