The methods of differentiating benign malignant breast lumps mainly include: 1. physical examination: benign lumps have a soft and tough texture, while malignant tumors have a hard texture; 2. imaging examination: patients can undergo ultrasound, mammography and MRI. The boundary of benign masses is clearer, with better mobility and no adhesion with surrounding skin; the boundary of malignant tumors is not clear, with obvious adhesion with skin, with orange peel sign on skin, often with enlarged lymph nodes, richer blood flow and with calcification; 3.Pathological examination: carried out by fine needle aspiration and mass biopsy. Pathological results are the gold standard for diagnosing the nature of the mass.