Invasive breast cancer is a type of breast cancer that is categorized from a pathological point of view as grades one to three depending on the puncture of the cancer cells, which is the basis for doctors to assess the condition and determine treatment options. The higher the grade, the more severe the disease, with Grade II representing a tumor of moderate malignancy. Grade II invasive breast cancer represents invasion of the tissue around the breast ducts by cancer cells, which is one of the signs that the tumor is progressing. Without timely treatment, the cancer cells can also metastasize to lymph nodes or other organs through lymphatic circulation and blood circulation. The treatment of invasive breast cancer depends on whether the cancer cells have metastasis or not, in the absence of metastasis, genetic testing or surgery is usually adopted, if la metastasis occurs, radiotherapy, endocrine and targeted therapy are mostly used. It is suggested that patients should keep a good mindset and cooperate with doctors for treatment, which is conducive to the recovery of the condition.