Fat liquefaction is still possible 12 days after cesarean section. Fat liquefaction after cesarean section is a common type of poor incision healing in obstetrics, which commonly occurs 5-7 days after the operation, but clinically, incisional oozing may still be found 2 weeks after the operation, or even 1 month after the operation, and examination at the hospital will reveal that the incision is split up to the fascial layer. So fat liquefaction may still occur 12 days after cesarean section. For pregnant women with high risk factors such as obesity, diabetes mellitus, and second or multiple cesarean sections, in addition to the surgeon improving his/her own surgical skills, the postoperative management of the abdominal incision should be strengthened after the operation to reduce the incidence of fat liquefaction. After being discharged from the hospital, the mother should mainly observe the abdominal incision for redness, swelling, oozing and other abnormal manifestations, and consult the hospital promptly if there is any discomfort.