There are two main possibilities for needle-like pain in the breast, as follows: 1. Cystic hyperplasia of the breast, which occurs in women of reproductive age between 30 and 50 years old, is related to endocrine hormone disorders, and is clinically manifested as breast pain, accompanied by nodule-like changes in the breast hyperplasia, the pain is mostly needle-like pain, and is aggravated before menstruation, and can be relieved after menstruation. The actual pain can be treated orally with Xiaojin Pill or Prolotherapy, and the symptoms can be relieved, if there is persistent breast pain or progressive nodule enlargement, nodule malignancy should be suspected, and surgical excision should be performed in a timely manner. 2, acute mastitis, which occurs in lactating women, is an acute purulent infection of the breast, in the initial stage of infection there is only needle-like pain in the breast, can be accompanied by local redness and swelling of the breast, when the infection further When the infection spreads further, breast abscess will appear and fluctuating lumps will be palpated in the breast, requiring surgical treatment.