Cesarean section wound with hard lumps formation, may be caused by abdominal incision endometriosis, scarring, thread reaction and other factors: 1, abdominal incision endometriosis: Cesarean section incision with hard lumps, may be the abdominal incision endometrium ectopic caused by symptoms, and the formation of hard lumps will be changed with the menstrual cycle, generally need to be treated by surgery. In order to avoid recurrence after surgery, medication can be applied under the guidance of the doctor; 2, scar hyperplasia: especially part of the mother is a scar body, the wound local scar hyperplasia is easy to form pimples, usually does not cause pain, this situation can be taken under the guidance of the doctor medication, surgery, or laser and other treatments, mothers pay attention to the wound during the recovery period of local hygiene, eat more high-protein and vitamin-rich foods, and can not eat spicy and stimulating food; 3, scar proliferation: especially part of the mother is a scar body, the wound is prone to form pimples, usually does not cause pain. Eat spicy and stimulating food; 3, knot reaction: if the hard lumps have no obvious pressure and pain, there is no redness and swelling, usually caused by the thread is not absorbed, such as the absorption of the thread after the hard lumps will gradually subside. If the knot reaction leads to poor local wound healing, infection due to inflammation stimulation, resulting in local pressure and pain, redness, swelling, pus, cracking and other manifestations, you need to use vascular forceps to remove the local wound knots, regular medication, while giving systemic anti-infective treatment, generally after 1-2 weeks will gradually improve.