Vaginal bleeding for one month is an abnormal phenomenon, it may be caused by menstrual disorder, post-abortion cavity residue, choriocarcinoma, etc. If the bleeding is heavy, timely treatment is needed. 1. Menstrual disorder: mainly caused by endocrine disorder, vaginal bleeding may occur repeatedly, mostly in perimenopausal and adolescent girls, if adolescent girls, the menstrual cycle can be adjusted with drugs. If it is perimenopausal, diagnostic scraping can be performed; 2. post-abortion residual uterine cavity: vaginal bleeding can be seen all the time, which can be diagnosed by ultrasound combined with blood HCG, and intramuscular injection of uterine contraction can be given. HCG is very high, and the treatment is mainly based on chemotherapy, supplemented by surgery; 4. Blood diseases: such as coagulation dysfunction, if the cervix and vagina are broken, there will be continuous vaginal bleeding due to abnormal coagulation, and hematology-related examinations are needed to clarify the cause and individualize the treatment according to the patient’s symptoms and signs; 5. Other: for example, cervical cancer, endometrial cancer, ovarian cancer, uterine fibroids, etc. In addition, exogenous Oral hormonal drugs, trauma, etc. can also appear as bleeding from the pubic area, and treatment is needed after clarifying the cause.