Hot water bag compresses the abdomen after the discharge of blood clots in a variety of situations, divided into physiological factors and pathological factors, the details are as follows: a. Physiological factors 1, menstruation: abdominal pain during menstruation and cold, hot water bag compresses the abdomen with blood clots out, because of the performance of the uterus cold, as a normal phenomenon. This situation should pay attention to keep warm, not cold, should also pay attention to not eat cold, stimulating, spicy food, drink brown sugar ginger water in moderation, stimulate the endometrium, blood circulation, dredge the meridians, to help the smooth discharge of blood clots; 2, the puerperium: after delivery with a hot water bag hot compress abdomen with blood clots out, is the normal malignant dew. The bleeding should be observed. Generally, bloody malignant dew ends about 1-2 weeks after delivery. You can also take Chinese medicinal preparations, such as motherwort pellets, to improve blood flow, help the discharge of malodorous dew and promote the recovery of the uterus. During this period, pay attention to keeping warm, keep the vulva clean and hygienic, and strengthen nutrition in the diet. Pathological factors 1, endometrial polyp: can have abnormal uterine bleeding, discharge with foul-smelling bloody discharge, should promptly do vaginal ultrasound and hysteroscopy, can choose hysteroscopic electrosurgery treatment, such as can not be eradicated or often recurrence, can consider total hysterectomy; 2, endometrial thickening: can have irregular vaginal bleeding and foul-smelling bloody discharge, accompanied by abdominal pain symptoms, should go to the hospital to do endometrial Biopsy should be done to confirm the diagnosis, and ovulation-promoting drugs such as clomiphene, progesterone, etc. can be used as prescribed by the doctor, or surgery can be chosen. 3. Submucosal fibroids: irregular vaginal bleeding or purulent discharge, severe symptoms such as general weakness, pallor, shortness of breath and panic can occur. Ultrasonography should be performed to confirm the diagnosis, and treatment can be chosen from hysteroscopic myomectomy or hysterectomy.