Objective This paper is to discuss diagnostic value of ultrasonic elastography combining color Doppler ultrasonography on breast tumor. Methods Three hundred and fifty seven patients with breast cancer were studied, two different approaches were applied to diagnose, patients in the control group were subject to ultrasonic elastography, and patients in the research group were subject to ultrasonic elastography technology combining color Doppler ultrasonography examination and diagnosis, and diagnostic accuracies of two examination modes were compared. Results There was no obvious difference in pathological diagnosis on patients in the research group. The comparison in diagnosis sensitivity, accuracy, specificity, misdiagnosis rate, missed diagnosis and pathological diagnosis satisfied X2=13.83, 8.29, 5.10, 8.29 and 5.10 (P<0.05), and differences were statistically significant. The comparisons in diagnosis sensitivity, accuracy, specificity, misdiagnosis rate, missed diagnosis and pathological diagnosis of patients in two group satisfied X2=3.88, 4.69, 5.10, 4.69 and 5.10 (P < 0.05) respectively, and the differences were statistically significant. Conclusions Ultrasonic elastography combining color Doppler ultrasonography delivers high ultrasonography elasticity imaging diagnosis in diagnosis accuracy, specificity and sensitivity on patients with breast cancer, promotes clinical judgment on benign and malignant mass, makes for clinical diagnosis on breast tumor as early as possible, and guarantees the efficacy, posing high value of clinical services.