Breast nodule ultrasonography reveals poor translucency, most often seen in breast cystic hyperplasia, also known as breast cysts. Breast cystic hyperplasia belongs to the breast hyperplasia, is the breast lobules, small ducts and the end section of the ducts highly dilated formation of cysts of the cysts as the main feature, is the restoration of incomplete due to the structure of the mammary glands caused by the disorders, belongs to the benign lesions. The occurrence of this disease is related to the stimulation of ovarian endocrine hormones, and estrogen stimulates the proliferation of breast epithelial cells, which can also lead to the expansion of breast ducts, thus forming cysts. Breast cysts usually show poor translucency on breast ultrasound, mainly due to the possible presence of fluid within the capsule. It is recommended that patients with breast cysts consult a hospital and choose the appropriate treatment under the guidance of a doctor.