Breast cystic mixed nodules are cystic occupations in the breast tissue, the occupations have a peritoneum and the peritoneum is lined with fluid tissue, which can be categorized into simple, complex and mixed cystic nodules. 1. Simple type: Simple cystic nodules of the breast can be treated by simple aspiration through puncture if the cyst is large. The punctured fluid is usually light green in color. If the fluid is suspicious in color, cytology is needed. 2. Complicated type: Complicated cysts are cysts with thicker walls and contents between cystic and solid, with a low probability of malignancy, but still require puncture biopsy. 3. Mixed type: it refers to parenchymal lesions and fluid tissue within the cyst, with a malignant probability of 20%-43%. It needs to be treated promptly at surgery. When breast cystic mixed nodules appear, you should go to the hospital for timely examination and treatment under the guidance of the doctor.