I. Tumor size Tumor size has been repeatedly proved to be one of the most important prognostic indicators of breast cancer. Many studies have shown that the survival period of breast cancer patients shows a stepwise change depending on the size of the tumor: the larger the tumor is, the shorter the survival period is. Tumor size is also directly related to axillary lymph node metastasis and distant metastasis. Lymph node metastasis Lymph node metastasis and the number of metastasis are one of the most important prognostic indicators of breast cancer. The prognosis is better if there is no lymph node metastasis, while the prognosis is worse if there is lymph node metastasis. The number of lymph node metastasis and the site of metastasis of those with lymph node metastasis have a greater impact on the prognosis. The higher the number of metastatic lymph nodes, the worse the prognosis. In addition, the location of lymph node metastasis is also related to the prognosis, the higher the location of metastasis, the worse the prognosis. According to WHO histologic classification, breast cancer can be divided into two categories: non-invasive and invasive. The prognosis of non-invasive cancer is obviously better than invasive cancer. Non-invasive carcinomas include: intraductal carcinoma and lobular carcinoma in situ. Among the invasive carcinomas, ductal carcinoma is very common, accounting for about 65%-80% of cases, while the rest are called special types of carcinomas. Specialized types of cancer can be classified into good, intermediate and poor prognosis according to their prognosis. The types of breast cancer with good prognosis are: ductal carcinoma; invasive saphenoid carcinoma; mucinous adenocarcinoma. Types of breast cancer with intermediate prognosis: medullary carcinoma; invasive lobular carcinoma. Types of breast cancer with poor prognosis: carcinoma with metaplasia; imprinted cell carcinoma; inflammatory breast cancer; lipid-rich carcinoma. Histopathological grading of breast cancer is a valuable prognostic indicator for early breast cancer: Grade I and Grade II have good prognosis, Grade III has poor prognosis. V. Other histopathological properties Vascular infiltration of tumor is a collective term for lymphatic infiltration and vascular infiltration of tumor. The prognosis of vascular infiltration is poor. Generally speaking, hormone receptor-positive tumors are better differentiated, less likely to develop visceral metastasis and sensitive to endocrine therapy, while receptor-negative breast cancers are poorly differentiated, prone to visceral metastasis, especially liver and brain metastasis, and less responsive to endocrine therapy. Carrying out breast far-infrared scanner, high-frequency color ultrasound of breast, molybdenum target mammography, magnetic resonance imaging of breast, fine needle and coarse needle puncture biopsy of breast and other routine breast examination items in addition to sentinel lymph node detector and so on. We carry out minimally invasive, cosmetic and standardized comprehensive treatment of breast cancer with a human-centered purpose and in the interest of patients, returning beautiful breasts to the majority of women while treating diseases.