As a new wall material, autoclaved aerated concrete (AAC) can realize the self-insulation system of "single material" wall in different climate regions in China. At the same time, it has obvious advantages in engineering construction, such as saving resources, easy processing, and good fire resistance. Therefore, AAC can be used as the preferred wall material for infilled walls of frame structures and load-bearing walls of residential multi-story buildings. In this paper, firstly, the main characteristics of AAC blocks are briefly explained. Then, the seismic performance of Reinforced Concrete frame of AAC, the impact of hole characteristics on its mechanical properties, and its compressive properties are analyzed and explored. It is expected that AAC blocks will be widely used and developed in the process of filling construction in the future.