Lobular carcinoma in situ belongs to a kind of malignant tumor, which is usually induced by environmental factors and hereditary factors, and patients may have symptoms such as breast lumps and nipple overflow. Patients may have symptoms such as breast lumps and nipple discharge, etc. It can be treated by surgery and chemotherapy as prescribed by doctors, and the earlier it is treated, the better the prognosis will be, while the untimely treatment may jeopardize the safety of life. Lobular carcinoma in situ is a kind of breast disease. If parents have suffered from lobular carcinoma in situ, their children may carry susceptible genes in their bodies, which will increase the chance of their children developing lobular carcinoma in situ. Secondly, lobular carcinoma may also be induced by prolonged stimulation by chemical substances and radiation, resulting in symptoms such as breast lumps, nipple overflow and breast concavity. When the patient is in the early stage of the disease, he/she can follow the doctor’s instruction to undergo surgical treatment, and there is a certain chance to be cured. If the patient is in the middle or late stage of the disease, chemotherapy and radiotherapy may be required, at which time the prognosis is poorer, and if the treatment is not timely, it may even jeopardize the safety of the patient’s life. It is recommended that patients diagnosed with lobular carcinoma in situ should have early detection and early treatment to avoid delaying the disease.