Abnormal blood vessel or ligament. According to the information on the website of seeking medical advice, Cooper's ligament is called suspensory ligament of breast, which is a cellulose structure in breast. Strong echo is mainly seen in patients with abnormal blood vessels or ligaments. The screen display is bright, accompanied by patchy or striped echo, and the local tissue texture is hard. Cooper's ligament is a vertical tissue connecting the glandular lobe of breast and superficial fascia of skin, and its main function is to fix the breast bracket.