Abstract： Objective To explore the ultrasound images features of breast infiltrating ductal carcinoma. Methods Retrospective analysis of operation pathology ,55 patients diagnosed preoperatively infiltrating ductal carcinoma of color Doppler ultrasound diagnostic information. Results Before operation, 55 patients with breast tumors had color Doppler shows in 49 cases,no color doppler showed 6 cases,color Doppler shows with pathologic diagnosis is 89.1%. An infiltrating ductal carcinoma ultrasound image characteristics:the larger mass was irregular form,no coated, posterior acoustic attenuation,"burr levy" ,and "crabs foot shape" more inside,bump such change for not uniformity hypoechoic,with tiny clusters of calcified or irregular flare,shadow,blood flow distribution after silent for AlderⅡmore performance level Ⅲ,axillary lymph node enlargement,a different level hilus structure was clear,the peak systolic velocity in 12-80cm/s (average 35.1 cm/s ) , resistance index in 0.62-0.92 (average for 0.79 + 0.10). Conclusion Color doppler ultrasonography had important value in early diagnosis of infiltrating ductal carcinoma.