Breast cystic nodules may recur, and it is recommended to have regular review and reasonable diet after surgery. Breast cystic nodule is a common clinical benign breast disease, which is caused by endocrine dysfunction resulting in partial hyperplasia of breast parenchyma or incomplete regeneration, leading to cystic dilatation of breast ducts and formation of breast lumps, which are prone to recurrence with localized irritation. Ductal hyperplasia, such as plasma cell mastitis, leads to obstruction of the milk ducts, obstruction of secretion discharge, and cystic dilatation of the ducts caused by bacterial infection, which will form cystic nodules under ultrasound, and is also prone to recurrence. There is also acute mastitis, bacterial invasion occurs purulent inflammatory changes, the infection is not controlled to form a breast abscess, in the ultrasound under the manifestation of breast cystic nodules. If the body’s hormone level changes, the breast cystic nodules will also increase, which will lead to the recurrence of the disease. Patients with cystic breast nodules are advised to seek prompt medical attention and to follow the doctor’s instructions for regular checkups after surgery.