Breast adenoma and breast fibroma are both benign diseases of the breast. The differences between the two are different sources, different growth patterns, different compositions and different treatment modalities. 1. Different sources: breast adenomas originate from breast glandular tissue, while breast fibromas originate from breast subcutaneous soft tissue. 2. Different growth modes: the growth rate of breast adenoma is affected by estrogen level, and if the tumor diameter is larger than 7 cm, it has the tendency of malignant transformation. Breast fibroma is usually single, slow-growing and seldom develops malignant changes. 3. Different composition: breast adenoma is composed of fibers and glandular cells, while breast fibroma is generally composed of fibers only. 4. Different treatment modes: Breast adenoma is usually treated by surgical excision, while breast fibroma does not need special treatment. It is recommended that patients with breast adenoma and breast fibroma go to the hospital in time to see a doctor and get a clear understanding of the specific disease and then actively treat it under the doctor’s guidance to avoid delaying the condition.