The treatment of intraductal papilloma is mainly surgical. For single intraductal papilloma, the entire milk duct should be removed. The tumor is relatively small and not easily detected, and is only found when the underwear is stained by nipple overflow. It mostly occurs in menstruating mothers aged 40-50 years old, and the location of the onset is in the jug abdomen of the large milk duct near the nipple, and nipple overflow is found by pressing the nipple with a finger, which can determine the mouth of the milk duct where the overflow occurs. The excised tissue is routinely sent for pathological biopsy. If malignant cells are present, radical mastectomy is required. For older patients with active ductal epithelial hyperplasia, simple mastectomy can be performed. Although intraductal papilloma is benign, it has a certain chance of malignancy and requires vigilance.