Heavy and bright red menstruation after delivery may be a normal physiological phenomenon, or it may be related to factors such as residual uterine cavity, postpartum strain and other diseases. It needs to be combined with other symptoms and targeted treatment after clarifying the cause. Common causes and treatments 1. Normal physiological phenomenon: increased secretion of prolactin and suppression of ovulation function after delivery, resulting in significant thickening of the endometrium. When menstruation comes, the thickened endometrium is shed in large quantities, which leads to an increase in menstrual volume and bright red color. Generally, the symptoms will disappear spontaneously with the stabilization of the menstrual cycle, so there is no need to worry too much. 2. Postpartum exertion: excessive physical labor can cause pelvic congestion, which in turn leads to excessive menstrual volume, bright red color, prolonged menstrual period and other symptoms. Pay attention to keep a good mood, pay attention to rest and avoid straining. If it occurs repeatedly or bleeds more, you need to go to the hospital. 3. Uterine cavity residue: In addition to the large amount of menstruation and bright red color, if there are also symptoms such as abdominal pain and prolonged menstruation, it is suspected that there may be some tissue residue in the uterine cavity. At this time, you need to go to the hospital for examination, according to the size of the residue to choose drug treatment or scraping treatment, but also massage the abdomen to promote uterine contraction, accelerate the uterine cavity residue discharge; 4, other diseases: if 3 months after the birth, there are still menstrual volume and bright red color and other symptoms, you need to consider the possibility of gynecological organic diseases such as uterine fibroids. Uterine fibroids affect the contraction of the uterus and make the uterus repair poorly, which in turn leads to intrauterine infection and bleeding and other symptoms. The treatment should be decided according to the severity of the condition. Commonly used drugs include mifepristone, and surgical treatment is also available. Attention should be paid to keeping the abdomen warm during menstruation, using a warm water bag for hot compresses, while avoiding strain and ensuring sufficient sleep. Pay attention to the local hygiene of vulva to avoid infection. During the recovery period, intercourse is not recommended to avoid damaging the uterus or causing inflammation, and contraceptive measures should be done after resuming intercourse.