Objective: To explore the effectiveness of new method for respiratory motion artifacts in coronary artery CTA images Method: this text reviewed 20 cases of coronary artery CTA images from 2015 to 2016 in our hospital,and analyzed the quality of these images and the conceret reasons for those images, through repeated practice, gradually changing process, we can get how to effectively control the effect of respiratory motion on coronary artery CTA images Result: compared with the original images, The new method can effectively repair the effect of respiratory motion on the image quality of coronary artery CTA conclusion: After strictly breath training, for those in the examination who still can not effectively control their breath, and produce artifacts on the image, we can effectively repair the influence of respiratory motion on coronary artery CTA images by the new method.the application value of the new post processing method in the effect of respiratory motion on coronary artery CTA images in this text is up to nonvascular fault, The results showed that the new method has a good effect on the effect of respiratory motion on coronary artery CTA images, but the method is more complex and high reproducibility. coronary CTA examination is Noninvasive and simple .The original data can be a variety of different processing, such as maximum intensity projection (MIP) and multiplanar reconstruction, volume rendering and so on, and multiplanar reconstruction for tortuous coronary artery can be displayed in a level, increasing the visual degree . Coronary artery CTA in the specific display of coronary heart disease: first, it can visually display the location of coronary artery clogging. Second, coronary artery CTA to determine whether coronary artery clogging and blocking degree is of great help, but the false positive rate is relatively high, coronary artery CTA plaqu e diagnosis accuracy compared with the gold standard of coronary artery angiography of low accuracy. Thir d, coronary CTA coronary angiography has a certain role, such as the location of the coronary artery, the length of the length, the general shape and the surrounding adjacent relationship, help to locate the operation. Fourth, coronary artery CTA in the diagnosis of coronary artery congenital abnormalities help greatly. CTA can clearly display the coronary artery malformation of coronary artery and ectopic opening angle, and provide a reliable basis for coronary angiography. Fifth, coronary artery CTA is not suitable for patients with coronary angiography to bring the gospel. Sixth, coronary artery CTA can clearly show calcification, the location and size of the calcification of the location, accurate diagnosis. In practical applications, in addition to the new method, but also do a good job before the examination ,such as respiratory training and the relevant matters about this check.