Multiple breast cancers are generally not suitable for breast-conserving surgery and need to be treated by radical surgery. Multiple breast cancers, which are defined as multiple tumor foci in a single breast or bilateral breasts with simultaneous malignant tumor lesions, are generally not suitable for breast-conserving surgery. Patients with multiple breast cancers need to be treated by radical surgery to remove the lesions. If necessary, they also need to be treated by performing postoperative radiotherapy, chemotherapy, targeting and other treatments to reduce tumor recurrence and metastasis. After surgery, patients should avoid high sugar, high fat, high salt and other foods, and can eat more fresh vegetables and fruits in moderation, and also need to exercise appropriately to improve the quality of life of patients. Patients with multiple breast cancers should go to the hospital in time and choose the appropriate treatment under the doctor’s advice.