If you have vaginal bleeding after menstruation, you need to consider the following aspects: 1. Exclude abnormal uterine bleeding caused by pregnancy. This is very simple, buy urine pregnancy test and test your morning urine, you can easily exclude pregnancy induced bleeding. 2. Exclude endocrine causes of abnormal uterine bleeding. If the ultrasound indicates a thin endometrium, you can use anti-inflammatory drugs to stop the bleeding for the time being. If the ultrasound suggests a thick endometrium, progesterone is needed to retreat the bleeding if necessary. And a small amount of vaginal bleeding between periods needs to be considered ovulatory bleeding, which is accompanied by hormonal fluctuations and may result in a small amount of exfoliative bleeding of the endometrium. If there has been vaginal bleeding in the intermenstrual period after the whole period, the patient may also consider short-acting oral short-acting contraceptive pills if there is no fertility requirement for the time being.3. Vaginal bleeding due to cervical lesions needs to be excluded and regular screening for cervical cancer is required.