Most women during menstruation with blood clots is a common phenomenon indicating that the amount of menstruation is high, do not be nervous too afraid of this. The blood volume during menstruation is normal as long as it is within the range of 5ml-50ml. The female body withdraws from estrogen and progesterone and the endometrium peels off without the support of hormones, i.e. menstruation. Menstrual blood is a mixture of blood, cervical mucus, and vaginal epithelial cells from the peeled endometrium. If a woman’s menstrual blood is accompanied by blood clots during menstruation, and if the amount reaches 80ml, she should pay attention to whether she has dizziness, fine sweating and other symptoms to prevent acute blood loss anemia. To sum up, it is normal for women to have clots but the volume of menstruation is within the normal range and there is no other discomfort, so no intervention is needed. If the menstrual blood is accompanied by a large amount of clots and other physical discomfort, it is recommended to go to the hospital for examination and treatment.