Finding something on top of the breast and feeling inside, that is, finding something or a hard lump inside the breast, is considered to be an occupational lesion occurring in the breast gland. The specific causes include benign and malignant diseases, and there is a clear tendency for the occurrence of these diseases to run in families. In addition, it is also related to the individual’s own factors. Because diseases occurring in the breast, whether benign or malignant, are related to changes in estrogen and progesterone levels in the body, further tests, including ultrasound, mammography, or MRI of the breast, are needed to make a preliminary identification. In cases where the diagnosis cannot be confirmed, surgical treatment is also an option, with complete removal of the lesion for pathological examination. Malignant lesions usually have no painful symptoms, while patients with benign tumors usually present with localized vague pain, swelling, and even some patients may present with significant premenstrual swelling.