The prognosis for patients with invasive lobular carcinoma of the breast is typical, with a five-year survival rate of 85.5% in the early stages and 27.4% after metastasis. Breast cancer is a malignant neoplastic lesion occurring in the region of the breast, and invasive lobular carcinoma of the breast classic is a type of breast cancer with invasive lesions. Early lesions are limited and usually do not metastasize. As the lesion continues to develop, it will metastasize to the surrounding tissues as well as distant organs and tissues. If the lesion can be diagnosed at an early stage and the surrounding lymph nodes are removed by surgery, and the patient can be stabilized with radiotherapy, targeted drug therapy and endocrine therapy, the five-year survival rate of the patient can reach 85.5%. If distant metastasis of the lesion occurs, patients have a very high chance of recurrence and metastasis after surgery, and the five-year survival rate of patients is about 27.4%. Regardless of the stage of the disease, patients need regular treatment under the guidance of a doctor. Due to the continuous improvement of medical standards, there are more treatment options for breast cancer, and regular treatment can greatly improve the survival time and quality of life of patients.