When women have just given birth, due to the increase of estrogen in their bodies, menstruation may become irregular for a short period of time, with problems such as untimely menstruation, high or low menstrual volume, which are normal, but irregularities are not excluded. If the menstruation increases after delivery, the color of menstruation will be dark and it will not last too long, usually recovering in 6-8 months after delivery. The increase of menstruation in this case is not only related to their own hormonal reasons, but also closely related to the patient’s work and rest and mental stress after delivery. Therefore, patients can achieve rapid recovery through good rest, more bed rest and timely nutrition. If the increase in menstruation after delivery is abnormal, such as the increase in the volume of menstruation, there is a small abdominal distension, a feeling of falling objects and other special circumstances, and the duration is also very long, then consider whether it is uterine fibroids, uterine polyps and other gynecological diseases. This is the time to go to the hospital to do the relevant examination, women in the postpartum body resistance is poor, for gynecological diseases to do early detection, early treatment. Finally, women’s menstruation is a barometer of women’s health, production has a great impact on women’s bodies, so the increase in menstruation after childbirth, in addition to excluding the normal situation, we should also pay attention to whether it is other pathological factors.