Breast fibroids can be large and hard. Depending on the progression of the disease, when it is detected, and other factors, the size of the fibroid may vary. Breast fibromas are the most common benign tumors of the female breast, often presenting as smooth, well-demarcated, painless lumps, and can occur in multiple age groups, but tend to be more common in younger women. The pathologic tissue of breast fibroma consists of interstitial fibrous hyperplasia and glands, so the texture is usually hard. Since breast fibroids are painless lumps. When the patient is found when the disease has been longer, the fibroid can grow to a larger size and harder texture. Also, fibroids are affected by hormones, and during pregnancy and breastfeeding breast fibroids may grow rapidly and become large and hard. Breast fibroids are benign tumors of the breast, and under normal circumstances, they can be followed up and observed regularly; if they grow rapidly and malignancy is suspected, surgery is recommended. Therefore, when patients find lumps in breast, it is recommended to go to the hospital for further examination and standardized treatment under doctor’s guidance after clear diagnosis.