Breast cancer is a malignant tumor, and the tumor cells divide fast, so the metastasis is also faster. The specific metastasis speed is generally determined by the type of breast cancer, molecular typing, tumor staging, personal constitution and other factors. Breast cancer is divided into invasive and non-invasive. Invasive breast cancer is prone to shedding of tumor cells and rapid metastasis, which can spread to the surrounding cells and tissues, lymph nodes or various parts of the body; non-invasive breast cancer generally does not break through the basement membrane of the breast cancer, and the metastasis speed is slower than that of invasive breast cancer, and the treatment effect of non-invasive breast cancer will be better after surgery. The speed of breast cancer metastasis is related to many factors, and is also closely related to the patients themselves, such as older age or weaker physique, the body’s resistance is insufficient, and the metastasis will be faster.