Breast mammogram seems to see rounded slightly high density shadow to consider the possibility of breast hyperplasia, breast fibroma, breast tumor and so on. 1. Breast hyperplasia: the cause is related to endocrine hormone disorders in the body. Symptoms may include breast swelling and pain, palpation may touch the lump in the breast with clear boundary, swelling and pain symptoms are obvious before and after menstruation, and some physiological breast hyperplasia changes with menstrual cycle. 2. Breast fibroma: it occurs in young women and is related to the imbalance of sex hormone level in the patient’s body. Typical symptoms include breast pain and nipple discharge. On palpation, there is a lump with clear boundary, neat edge, smooth surface, moderate mobility and no adhesion with the skin. It is usually benign. 3. Breast tumor: a kind of tumor with high incidence rate, genetic factor is one of its causative factors. Clinical manifestations are nipple overflow, nipple inversion and retraction. Lumps with unclear boundary, adhesion with surrounding tissues and non-smooth surface can be palpated inside the breast. There is a certain malignant situation, need to carry out further puncture biopsy and other tests, clear diagnosis. Early detection and early treatment. There are other causes of rounded high-density shadow found in the breast by molybdenum target examination, and it is recommended to go to the hospital for further examination and further examination by a specialist to make a clear diagnosis, so as to avoid delaying the condition.