Benign lobular neoplasm of breast refers to the pathological classification of benign tumors, which are generally related to endocrine disorders, fibroadenoma, and factors of childbirth and breastfeeding. 1. Endocrine disorders: some studies show that hormone disorders in three stages can lead to breast lobular tumor, namely puberty, marriage and childbearing period, and before and after menopause, the development of mammary glands and hormones have a direct connection, when hormone disorders easily lead to abnormal development of mammary glands and thus form lobular tumor. 2. Fibroadenoma: Clinical research has found that the occurrence of lobular tumor and fibroadenoma are directly related, and a small number of people have fibroadenoma at the same time with lobular tumor. 3. Childbirth and breastfeeding: single women are more likely to suffer from lobular tumors than married women, and the reason is directly related to the secretion of estrogen and progesterone in the body, and there may be a tendency to increase during pregnancy. It is recommended that patients with lobular tumor of breast should consult the doctor in time, and standardize the treatment under the doctor’s guidance, so as to avoid the progress of the disease.