There are many reasons why girls have hard lumps in their breasts, specifically the following: 1, breast lymph nodes, lymph nodes in the breast will be stimulated to increase pain, can not massage, physiotherapy, you can infusion of anti-inflammatory control growth after surgery to remove. 2, breast hyperplasia, hard lumps in the chest and menstruation related, before and during menstruation will appear hard lumps pain can move, no adhesion with the surrounding tissue, usually do not need to deal with, 3, breast fibroids, the larger can be surgically removed. Breast fibroids are hard lumps in the breast without sensation, but a few of them have stabbing pain and swelling, and they will increase rapidly during pregnancy and breastfeeding. 4. Breast cancer, which has unclear burr-like boundaries, requires early examination, diagnosis and treatment, and later metastasis, which requires chemotherapy.