【Abstract】Objective To estimate the value of the infra-red light scanning and the colored ultrasonic Doppler in diagnosis of breast masses. Methods Two hundred and seventy nine patients with breast mass were examined with the infrared light scanning and the colored ultrasonic Doppler in our hospital.Following the two examinations the masses were resected and pathologically examined as a control. Results The conformity of the infra-red light scanning with pathologic diagnosis was 94.0% in 182 hyperplasia masses, while that of the ultrasonic Doppler was 84.6%(P＜0.01). The conformity of the infra-red light scanning with pathology was 91.7% and that of the colored ultrasonic Doppler was 83.3%(Pgt;0.05). The colored ultrasonic Doppler was seemingly more effective than infrared light scanning in diagnosing 9 galactocele and 5 intraductal papilloma, but there is no significant difference(Pgt;0.05). The conformity of the two exams with pathology in 59 fibroadenoma was almost the same.Conclusion The infra-red light scanning is more effective than the colored ultrasonic Doppler in diagnosing the hyperplasia masses, there is no significant difference in diagnosing the breast cancer and the fibroadenoma between the two exams. Combined use of this two exams would increase the accurase of the breast masses.