Mucinous carcinoma of the breast is a type of breast cancer. The main treatments are drug therapy, surgery, radiation therapy and chemotherapy. Early diagnosis and early treatment, the better the prognosis of patients. It is suggested that patients should go to hospital for consultation in time. 1. Drug therapy: drug therapy is divided into endocrine therapy and targeted drug therapy. Commonly used endocrine therapy drugs include tamoxifen, toremifene, letrozole, anastrozole and so on. Commonly used targeted drugs include trastuzumab, patuximab, T-DM1, lapatinib and so on. 2. Surgery: Commonly used surgical methods include mastectomy with breast preservation, total mastectomy, modified radical mastectomy and so on. Surgery is the main method of radical treatment for early-stage breast cancer patients. 3. Radiation therapy: killing cancer cells through high-energy rays. It can be used as auxiliary treatment before and after surgery, which helps to improve the cure rate of surgery. 4. Chemotherapy: Breast cancer is one of the most effective tumors among solid tumors in which chemotherapy is applied. It can be used after surgery to kill the remaining tumor cells and reduce the chance of recurrence of patients. There are many ways to treat breast cancer, and it is suggested that patients should consult with regular hospitals in time. Choose the best treatment plan under the guidance of doctors.