When breastfeeding, the patient accompanied by breast pins and needles feeling, the common causes are milk stagnation, acute mastitis, as follows: a. Milk stagnation: more milk can not be discharged smoothly, it will cause milk stagnation and cause the pressure in the milk ducts to rise, resulting in pins and needles pain in the breasts. At this time, it is recommended that the patient appropriate hot compresses, massage, through the extrusion of the milk in the breast tube to discharge the body, reduce the pressure of the breast tube, so as to improve the local pinpoint pain. Second, acute mastitis: If the patient’s local milk stagnation time is longer, accompanied by bacterial stagnation, it will be manifested as acute mastitis. At this time, the patient in addition to the breast with pins and needles pain, there will be chills, high fever, nausea, vomiting and other clinical manifestations, it is recommended that the patient as soon as possible infusion of penicillin or cephalosporin antibiotics to strengthen the anti-infection treatment. At the same time, try to squeeze out the local milk, to avoid milk stagnation, and cause local bacterial infection aggravated, resulting in breast abscess.