Abstract: Invasive breast carcinoma no special type (NST) is the most common type of cancer, making up about 40-75% of invasive breast cancers. Conventional histopathology prognostic indicators including histology type, tumor size, lymph node involvement, grade, hormone receptor expression, etc. still play an important role in the estimated prognosis in breast carcinoma. Tumors bud are an important step in tumor invasion and metastasis and have attracted interest as a marker of prognosis. Research on the role of tumor budding in breast cancer is still limited.