Male milk pain and hard lumps are considered to be related to enlarged lymph nodes in the chest, breast hyperplasia, breast cancer and other factors. It is recommended to do relevant examinations in time to clarify the diagnosis and give appropriate treatment. 1. Enlarged lymph nodes in the chest: It is considered to be related to bacterial and viral infections, autoimmune diseases, allergies and other factors. Clinical manifestations include enlarged lymph nodes in the breast, localized swelling, pain and hard lumps in the breast, etc. Inflammatory hyperplasia of lymph nodes is more common. Inflammatory hyperplasia of lymph nodes is more common, you can use anti-inflammatory drugs such as amoxicillin and ceftriaxone under the guidance of the doctor to relieve the treatment. 2. Breast Hyperplasia: The cause of the disease is still unclear, and may be related to the imbalance of estrogen and androgen levels. Clinical manifestations are unilateral or bilateral breast enlargement, localized hard lumps and accompanied by tenderness. It can be treated with estrogen-resistant drugs such as clomiphene and tamoxifen under the guidance of a doctor. Liposuction, adenoidectomy and other surgical treatments are also available. 3. Breast cancer: It is highly prevalent in women, but also occurs in men. The cause of the disease is still unclear, and it may be related to endogenous factors, genetic factors, sex chromosome abnormality, etc. The clinical manifestations include breast lumps, breast cancer, breast cancer, breast cancer, and breast cancer. Clinical manifestations include breast lump, pain, nipple inversion and other symptoms. Generally, radical mastectomy is required for treatment of breast cancer. Male breast pain and hard lumps can be caused by a variety of factors, it is recommended that timely medical examination, targeted treatment.