If the vagina bleeds on the first day of menstruation and discharges a pile of flesh-like tissue, clinically there are several reasons: the first is the so-called membranous menstruation, when menstruation normally occurs, the endometrium is discharged from the vagina in the form of fragments, but when the endometrium is inflamed or overactive, it can cause a large piece of endometrium to be shed and clinically there will be a pile of flesh-like tissue. This is often accompanied by dysmenorrhea, and the pain in the lower abdomen is significantly relieved when the flesh-like tissue is discharged. The second is a history of menopause, which may be caused by pregnancy. It is advisable to send the discharged tissue to the hospital for pathological examination and blood test for HCG, mainly to exclude the possibility of pregnancy.