The judgment of benign and malignant breast tumors is mainly from the following aspects: First, clinical examination, for benign breast tumors, most of them are multiple, the boundary of the lump is clear, the shape is regular, the texture is tough, and the mobility is good. For malignant tumors, many of them are solitary and are found in the outer upper quadrant of the breast, with unclear borders, irregular shape, hardness and poor mobility. For benign breast tumors, most of them are graded at grade 2 and 3 of BI-RADS, while malignant tumors are graded at grade 4 and 5. Pathological examination is the gold standard for identifying benign and malignant breast tumors. Fine needle aspiration, coarse needle aspiration and minimally invasive rotary excisional biopsy can be chosen to clarify the benign and malignant breast tumors.