There might be many reasons why domestic animation did not have any realistic theme. First of all, the development of domestic animation was relatively short. Compared to other countries 'animation works, domestic animation still had some gaps in terms of technology, capital, and talent. Therefore, when creating real-life works, technical feasibility and production costs needed to be considered. Secondly, realistic works often required in-depth discussion of social and human issues, which required the creators to have a higher sense of social responsibility and cultural accomplishment. In contrast, domestic animation tended to be more fictional and fantasy, which was easier to produce and spread, and had relatively lower technical and cultural requirements. Finally, realistic works faced certain difficulties and challenges in the process of creation and communication. For example, they needed to dig deep into the inner world and emotional changes of the characters. They needed to show the real social situation and human nature. This required the creators to have stronger creative ability and storytelling ability. Therefore, the lack of realistic theme works in domestic animations could be the result of a combination of many factors. However, with the continuous development and improvement of domestic animation, he believed that there would be more excellent reality-themed works in the future.