The punctiform blood flow signal in breast nodules indicates that there is blood supply inside the nodule, which is analyzed as follows: 1. Breast fibroids, which have hard texture and clear borders, most of which are not painful, and blood flow signal is visible inside the blood supply. During pregnancy and lactation, the lump will increase rapidly and the patient’s life will be seriously affected. 2. Cystic adenoma of the breast, with clear borders and soft texture, blood flow signal is visible in the cyst wall. The lump can not be eliminated by medication, but it can be observed regularly when it grows slowly without symptoms. 3. Breast lipoma is a benign lesion mostly seen in young women, with slow growth, clear boundary and not hard texture, and blood flow signal can be seen on ultrasound, which can be removed surgically.