Breast lumps and bumps are considered to be caused by the following reasons: first, it is mostly considered to be caused by breast hyperplasia, and the lumpy objects touched are considered to be hyperplastic mammary glands, mostly due to endocrine disorders, which usually appear as lumps in the breast, breast pain and abnormal nipple overflow, etc., and the symptoms are more pronounced especially before the onset of menstruation, which is because of the influence of the menstrual cycle. This is due to the changes of recurrence and hyperplasia in the breast; secondly, it may be due to the poor discharge of breast milk during breastfeeding to the point of stagnation and blockage of the milk ducts resulting in granules; lastly, in the case of elderly patients, it is mostly considered to be the appearance of fat granules due to the degeneration of the mammary glands. In addition to the above, it may also be caused by breast fibroma or other conditions, and it is recommended to go to the breast specialist in the hospital in time.