Abstract:  Code review is an important step in developing embedded software for aerospace. In recent years, with the increase of requirements in embedded software development, the traditional manualbased code review method has gradually failed to meet the fastpaced software development. In order to relieve the pressure of reviewer and prompt the efficient of code review, the researchers turn their attention to the field of artificial intelligence, especially the deep learning technology, and make efforts to find technological breakthroughs so as to develop a more intelligent review system. This article summarizes the research work related to the application of artificial intelligence technology in code review and code comprehension in recent years. First, the difficulties of embedded code review and the solution are briefly described. Furthermore, the key activity, program comprehension, is introduced. And the application of program comprehension based on artificial intelligence in code review is explained in detail. Finally, according to the development of related fields, the future tendency of code review is further discussed.