A band felt in the breast is usually a breast gland, which is a normal phenomenon and does not require special treatment. Secondly, it may also be caused by breast hyperplasia, breast fibroma and other diseases, which need to be treated with medication and surgery to improve the cause of the disease. 1. Normal phenomenon: it is normal to feel a strip of tendon in the breast, which is considered to be a normal mammary gland, and does not need to be treated, so just keep a good mood. 2. Mammary hyperplasia: Mammary hyperplasia is a common benign breast disease, the cause of which is related to endocrine dysfunction. The main symptoms of patients are breast pain, nodules or lumps, and you can feel a strip of tendon in the breast. 3. Breast fibroma: breast feel a strip of tendon may also be caused by breast fibroma, is a kind of smooth, clear border painless lump, the cause is not yet clear, considered with the breast tissue to estrogen sensitivity abnormally high. For people who feel a band in their breasts, it is recommended to go to the hospital for a relevant examination to clarify the cause of the disease.