Bleeding again half a month after the cleansing may be related to ovulatory bleeding or abnormalities such as residual uterine cavity, poor uterine rejuvenation or uterine fibroids. If the bleeding is large or prolonged, it is still recommended to go to the hospital for examination to clarify the cause and treatment.1. Ovulatory bleeding: Some patients recover quickly after surgery, their body functions quickly return to the pre-cleaning period, and their physiological cycles resume. If there is a small amount of bleeding, it may be due to ovulation, when the estrogen level drops briefly, causing the endometrium to shed and regular vaginal bleeding, accompanied by mild lower abdominal discomfort or lumbar soreness. It is recommended to do ovulation test paper test and basal body temperature measurement; 2. Uterine residue: bleeding half a month after uterine clearance can also be caused by uterine residue, at this time, the patient can have vaginal bleeding with more and sometimes less, accompanied by paroxysmal abdominal pain, and should go to the hospital for ultrasound examination to confirm the diagnosis, and can follow medical advice to use pro-uterine contraction medicine treatment, such as motherwort, postpartum stasis granules, etc., and clear the uterus again if necessary; 3. Poor uterine regeneration: the patient can have The patient may have heavy vaginal bleeding, accompanied by lumbar pain and lower abdominal cramping, diagnostic scraping should be performed to confirm the diagnosis. Patients can apply antibiotics and pro-uterine contraction drugs such as roxithromycin and misoprostol as prescribed by the doctor. 4. Uterine fibroids: often have irregular vaginal bleeding, accompanied by foul-smelling vaginal fluid, lower abdominal cramping and pain, etc. Ultrasound, MRI and hysterosalpingography should be performed, and medication such as mifepristone and indomethacin can be applied as prescribed by the doctor to reduce the size of fibroids and improve excessive menstrual bleeding, and surgery if necessary.