Small fleshy bumps under the breast when touched can be classified as follows: First, something that can be touched is located under the skin and may be a sebaceous cyst, lipoma, or other subcutaneous swelling that is not related to the breast. If it is relatively large, it can be surgically removed. Second, located in the epidermis may be a localized skin redundancy, mostly localized polypoid masses. Third, breast occupancies that are related to the breast, of which the more common ones are hyperplastic nodules, breast fibroids, etc. Its need to be treated differently and may require surgical treatment. Fourthly, it is more serious and may be a clinical manifestation of breast cancer, breast cancer tumor itself or metastatic lesions that appear, which needs immediate professional consultation and treatment in hospital and should not be treated carelessly.