There may be several reasons for bleeding again after menstruation: 1. there may be endometrial polyps, or excessive hyperplasia of the endometrium. it is recommended to do a gynecological ultrasound to see if the uterus, adnexa and endometrium are abnormal. 2. there may be endocrine disorders. you can check the female hormone six levels to see if there are problems with estrogen and progesterone. 3. it is recommended to do a gynecological internal examination to see if there is chronic cervicitis or cervical polyps. The more serious cervicitis or cervical polyps can lead to bleeding again after the period. 4, if in the ovulation period, may also be ovulatory bleeding, due to insufficient support of the body’s hormone levels caused by the occasional occurrence, the general bleeding is particularly small, do not need special treatment, observation can be.