There are more causes of blood in the leukorrhea, listing the more common ones: 1, if the patient is an IUD, it may be due to the intrauterine device in the uterine cavity, there will be a condition of blood in the leukorrhea; 2, during ovulation there may be ovulatory bleeding, there is a small amount of bleeding for 2-3 days; 3, inflammation: the most common is vaginitis or say cervicitis; 3, there is another more serious situation to consider Whether it is a case of cancer, such as cervical cancer, the most common symptom is that there will be blood in the leucorrhea after intercourse; or fallopian tube cancer, the patient will have blood in the leucorrhea, and at the same time there is blood-like leucorrhea outflow. Once blood is found in the leucorrhea, it is better to go to the hospital for routine leucorrhea test or colposcopy test of the cervix in order to clarify the specific cause.