MM_StoryAgent is a story video generation framework based on the multi-agent paradigm. It combines multiple modalities such as text, images, and audio to generate high-quality story videos through a multi-stage process. The core advantage of this framework lies in its customizability; users can customize expert tools to improve the generation quality of each component. Furthermore, it provides a list of story themes and evaluation criteria to facilitate further story creation and evaluation. MM_StoryAgent is primarily aimed at creators and businesses that need to efficiently generate story videos; its open-source nature allows users to extend and optimize it according to their own needs.