Fresh blood again 15 days after cesarean delivery is usually related to poor uterine recovery, intrauterine cavity residue, inflammatory infection and other factors. You should promptly go to the hospital for examination and clarify the cause by means of ultrasound and other examinations so that targeted treatment can be carried out. Common causes and treatment methods 1. Poor recovery of the uterus: Poor recovery of the contact surface with the placental tissue in the uterine cavity leads to the opening of the blood sinuses and causes bleeding. At this time, you should understand the recovery of the uterus by means of ultrasound and other examinations, and check whether there is blood accumulation in the uterine cavity. At the same time, under the guidance of a professional doctor, the uterine contraction should be promoted by the use of contraction hormone to reduce bleeding. Patients are advised to take more rest and avoid straining. They can eat more fruits and vegetables rich in nutrition, such as strawberries, pears, celery, etc.; 2. Residual in the uterine cavity: If there is residual placenta and fetal membrane tissue in the uterine cavity, it can lead to the opening of blood sinus and cause bleeding when it is dislodged. At this time, under the guidance of a professional doctor, medicines such as motherwort granules or new biochemical granules can be taken to promote uterine contraction and speed up the discharge of residual materials; 3, incisional infection: in addition to fresh blood, if it is accompanied by abdominal pain, abdominal cramps and other symptoms, it is considered to be caused by inflammatory infections, such as endometritis. Anti-infection treatment can be carried out under the guidance of a doctor. During the treatment period, intercourse should be avoided to avoid cross-infection.