The difference between cystic hyperplasia of the breast with and without peritoneum lies mainly in whether the growth is invasive or not. Breast cystic hyperplasia with peritoneum is usually expansive growth, and will not lead to invasive infiltration, most of the tumors are benign, the tumor growth rate is relatively slow, the prognosis is relatively good, early surgical treatment, can be radically removed. Breast cystic hyperplasia if there is no envelope, usually infiltrative growth of the tumor, the development speed is relatively fast, there is the possibility of malignant transformation, once found need to take early surgical treatment, to avoid further development of the tumor. Breast cystic hyperplasia is generally a benign disease, it is recommended that patients go to a regular hospital in a timely manner, follow the doctor’s instructions to receive treatment.