46-year-old woman menstruation appeared dripping up to 20 days, may be perimenopausal syndrome, uterine fibroids, cervical cancer, endometrial hyperplasia, endometrial polyps, endometrial cancer and other causes, the causes of different specific methods are also different, it is recommended to consult the regular hospitals for diagnosis and treatment. A 46-year-old woman with dribbling menstruation belongs to abnormal uterine bleeding, first of all, urinalysis to exclude pregnancy. If she is not pregnant, she needs to undergo cervical scraping and gynecological ultrasound to rule out cervical lesions and endometrial polyps and submucosal fibroids. If all the above examinations are fine, we first recommend hysteroscopy to rule out endometrial pathology. If there is no endometrial pathology, then we can consider perimenopausal menstrual disorders, which are common in clinical practice. Therefore, if a 46-year-old woman has irregular menstruation, she should go to the hospital to rule out some diseases.