Dilatation of milk ducts can be eliminated, and it is recommended that patients go to the cause of the disease in time to clarify the cause of the disease and treat the symptoms. If it is physiological breast duct dilatation, it will go down without special treatment; if it is pathologic breast duct dilatation, it is recommended to be treated according to the cause of the disease. 1. Physiological: If the patient is breastfeeding with dilated milk ducts, no special treatment is needed and it will go back to normal slowly after stopping breastfeeding. 2. Pathological: Dilatation of milk ducts is related to endocrine disorders. Due to the increase of secretions in the milk ducts, the pressure inside the ducts will increase, which will stimulate the milk ducts repeatedly and lead to dilatation of milk ducts. The main manifestations are pain, swelling and pain, and may be accompanied by overflow, etc. If left untreated, it will not go down on its own and will aggravate the condition. It is recommended to take oral medication such as lactofetish elimination, red gold knot-eliminating gel, tamoxifen, etc. under the guidance of a doctor to avoid worsening of the pain. In addition, the expansion of the milk ducts may also be related to breast tumors and other factors, patients with the expansion of the milk ducts, it is recommended to go to the hospital in a timely manner, should pay attention to personal hygiene, more physical exercise, improve their own immunity.