If a woman who had a cesarean delivery still has malodorous fluid one month after the operation, the following conditions should be considered: the first condition is the poor recovery of the uterus, the recovery time of the uterus of a woman who had a cesarean delivery may be slightly slower than that of a woman who had a normal delivery. In the second case, if the mother does not rest well during the month, especially if she does not sleep much at night, and if the baby does not suck the milk well, it will also affect the recovery of the uterus and lead to unclean bleeding. In the third case, if there are residues in the uterine cavity that are not discharged in time, or if a puerperal infection occurs, it can also lead to unclean dew. Therefore, if you have a lot of bad milk and it does not come out clean, it is recommended to go to the hospital for an ultrasound in time to understand the situation of uterine regeneration.