Ultrasonic light scattering imaging is a new functional imaging technology that combines traditional B-mode ultrasound imaging and light scattering tomography (DOT). It can improve the accuracy of early diagnosis of breast cancer based on the characteristics of abnormal blood supply and oxygen consumption of lesions. This study aims to evaluate the value of ultrasonic light scattering imaging in the differential diagnosis of benign and malignant breast nodules, and to evaluate the consistency between ultrasonic light scattering imaging and examiners in the differential diagnosis of benign and malignant breast nodules.