Invasive mucinous carcinoma of the breast should be invasive mucinous carcinoma of the breast, which means that the cancer cells have broken through the basement membrane and invaded the epithelial cells of the breast. Mucinous carcinoma of the breast belongs to a special type of cancer, which has the ability to invade surrounding tissues and metastasize to distant places. The main clinical symptoms are nipple abnormalities, breast skin changes, and breast lumps. However, most invasive breast cancers are painless and pain is not a common symptom of invasive breast cancer. Surgery is the preferred treatment for invasive breast mucinous carcinoma, and for those with advanced breast cancer or those who cannot tolerate surgery, radiotherapy, chemotherapy, and targeted therapy can be chosen. In addition, patients with invasive breast cancer should be careful not to consume spicy and stimulating, pickled and estrogen-rich foods to prevent aggravating their own condition. When patients develop breast cancer, they must go to the hospital in time and actively cooperate with doctors for treatment.