Fresh blood when the discharge is almost clean is not necessarily menstruation. After a full-term labor or cesarean section, the discharge will not be clean for more than 42 days, and there will be repeated bleeding, some will be clean for a few days, and then there will be fresh blood again. If the amount of discharged blood is not too much and does not exceed the amount of menstruation, it should not be a big problem, the specific reasons are as follows: 1, it may be related to eating blood-boosting food, such as drinking brown sugar water; 2, it may be related to the increase in activity, some cesarean section patients are lying in bed more after the operation, and with the increase in the number of days after the operation, the activity is gradually increased, and the fresh blood may reoccur; 3, it is necessary to exclude the pathologic factors, such as placenta residual membranous tissue, residual meconium tissue, infection, incomplete restoration of the uteroplacental attachment surface of the uterus. It is necessary to check the ultrasound examination, if the bleeding exceeds the amount of menstruation, and there is still residual tissue, it is necessary to clear the uterus. With infection there will be abdominal pain or fever, and anti-infection treatment is needed.