In breast surgery, there are patients with preoperative diagnosis of fibroadenoma, and postoperative pathology often returns a lobulated tumor of the breast. So, is surgical excision alone sufficient for lobular tumors? Surgical excision is the treatment of choice for lobular tumors of the breast. Local excision of the mass is not appropriate for the treatment of this tumor. Pathological margins of locally excised specimens can be found positive in about 20% of cases. Unless clear axillary lymph node involvement is found, lymphatic dissection is generally not required. The surgical approach can be determined by the size of the mass and the breast, using either extensive local excision of the lesion or simple mastectomy. North and Mcgown et al. reported no significant differences in survival, disease-free survival, or local control between the two surgical treatments. The extent of resection generally includes a requirement for 2-4 cm of normal tissue at the margin, including the pectoralis fascia at the base. If the tumor invades the pectoralis fascia, the pectoralis muscle can be resected at the same time; 2.If the axillary lymph nodes are enlarged, a lymph node biopsy can be performed first, and if metastasis is confirmed, the surgery can be performed according to the modified radical breast cancer surgery; 3.If the coexistence of cancer cannot be excluded, axillary lymph node clearance and contouring can be performed at the same time; 4.After local excision for low grade malignancy, the scope of excision needs to be expanded if there is recurrence; 5.If there is benign lesion, the local excision can be performed at the same time. If there is a benign lesion that recurs after local excision or recurrence, it should be treated as malignant. After local recurrence, the scope of surgery can still be expanded to achieve better results. For distant metastases, resection of metastases is feasible and can improve the survival rate.