Objective To evaluate the value of MicroPure imaging system of ultrasonography in display of breast calcification,and explore its clinical application value.Methods One hundred and forty-one patients underwent by mammography,conventional ultrasound imaging and MicroPure imaging,the mammography results were reference standard,observing the display rate of MicroPure imaging for calcification,and the value of MicroPure imaging in the display of calcification with different shapes on mammography.As the pathologic diagnosis was golden standard,the accuracy of diagnosis of conventional ultrasound,conventional ultrasound combined with MicroPure imaging,conventional ultrasound combined with mammography were evaluated with receiver operating characteristic(ROC) curve.Results The display case of calcifications within breast masses:the specificity of MieroPure imaging was lower than conventional ultrasound(88.14％ vs 100％,P ＜ 0.05),the sensitivity and accuracy were higher than conventional ultrasound(100％ vs 62.79％,93.14％ vs 84.31 ％,P ＜0.05).The display case of microcalcifications within normal breast tissue:the specificity and accuracy of MicroPure software system were lower than conventional ultrasound(9.26％ vs 100％,43.87％ vs 65.96％,P ＜0.05),the sensitivity was higher than conventional ultrasound (100％ vs 20.00％,P ＜0.05).The punctate calcification,amorphous calcification,rough uneven,pleomorphic calcifications on mammography were all hyperechoic spots on MicroPure software system.The area under the ROC curve of the conventional ultrasound,conventional ultrasound combined with MicroPure imaging,conventional ultrasound combined with MicroPure imaging was 0.881,0.858,0.932,respectively.Conclusions MicroPure imaging has some clinical value on microcalcifications within breast masses,which can improve its sensitivity and accuracy.The specificity of MicroPure imaging diagnostic ultrasound imaging of microcalcifications were lower,and it can not distinguish between different shapes of calcifications.Compared with conventional ultrasound,MicroPure imaging system can not improve the accuracy of diagnosis of benign and malignant breast lesions.