There are several reasons for the appearance of black blood clots and sticky material during menstruation: 1, consider that the Qi stagnation and blood stasis, Qi and blood deficiency, when the body is relatively weak, Qi stagnation and blood stasis will appear poor menstrual discharge, resulting in black blood clots; 2, consider that the uterus is cold, many women do not pay attention to health care during menstruation, the invasion of cold will appear after the uterus cold, at the same time will affect the discharge of menstrual blood, black The black blood clot will affect the discharge of the menstrual blood. It is recommended that the problem be diagnosed and treated in a timely manner so as not to affect the health of the body.