It is not normal for menstrual blood to appear pink. Normal menstrual blood is dark red and contains, in addition to blood, endometrial debris, cervical mucus, and shed vaginal epithelial cells. Menstrual blood contains a large amount of fibrinolytic enzymes, so menstrual blood is not clotted, but when menstrual blood bleeds excessively or rapidly, blood clots can also appear, so it is not normal for menstrual blood to be pink. The presence of pink discharge indicates abnormal bleeding from the uterus and requires a visit to the hospital to find the source of the bleeding. There are more causes of abnormal uterine bleeding, such as ovulatory bleeding and endocrine disorders, all of which can lead to abnormal uterine bleeding. After finding the lesion, use symptomatic hemostatic drugs or hormonal drugs to adjust the menstrual cycle under the guidance of a professional doctor.