It is relatively normal for menstrual blood to contain clear mucus. Clear mucus in menstrual blood occurs because of the large amount of vaginal secretions and cervical secretions in the menstrual blood. The menstrual blood contains a large amount of shed endometrium, there will also be clear mucus, but you need to pay attention to other discomforts, such as whether there is a strange smell, whether there is a change in the amount of menstruation, and whether there is itching and other discomforts of the vulva, mainly because some women who suffer from vaginitis and cervicitis, there will be an increase in the secretion of the reproductive system, and this situation will also occur. Normally, you need to pay attention to the hygiene during menstruation to avoid infection, pay attention to a reasonable diet, take more rest, ensure sufficient sleep and sleep quality, which can effectively improve the body’s immunity, reduce the probability of catching a cold or flu, and pay attention to keep the abdomen warm.