Compared to the traditional CT technology, CBCT technology has more advantages. The application of CBCT technology in the teaching of oral and maxillofacial medical imaging is less in our country, which was not conducive to the understanding of operation of students in clinical practice as well as the relevant theoretical knowledge. Firstly, the working principle and system composition of CBCT system were described in order to better understand its application in Teaching, which showed the advantages compared to the traditional CT Technology. The learning results after completing the theoretical knowledge of traditional CT technology and CBCT technology and the corresponding clinical practice were studied according to packet control tests of medical students in a university in 2016. The conclusion was obtained that CBCT has a positive effect on the teaching of oral and maxillofacial medical imaging, which not only can make students master the operation of the related instruments and equipment, but also can make it more accurate for reading and comparative analysis so as to learn the pathological characteristics of the patient and helpful for clinical diagnosis. Therefore, the application of CBCT technology in the teaching of oral and maxillofacial medical imaging should be strengthened.