The so-called fine needle aspiration cytology diagnosis of breast lumps is to use a 5-10 ml common syringe attached to a 6-8 gauge needle (needle outer diameter 0.6-0.8 mm), puncture the clinically suspicious lesion, then extract the cells from the lump with negative pressure, smear the cells on a slide, and ask the cytopathologist to make a diagnosis. This method is easy to perform, less invasive, less expensive, timely reporting, and correct fine needle puncture will not cause tumor dissemination. Fine needle aspiration of breast lumps for cytologic diagnosis is required for medical examiners who suspect breast cancer.