ControlNeXt, developed by the Jia Jiaya team, is an open-source image/video generation guidance tool designed to simplify the use of AI models. This tool is lightweight and compatible with models from the Stable Diffusion family, such as SDXL and SD1.5, supporting various control modes, including edge guidance, pose control, masking, and depth of field control. Its 'weight loss secret' lies in adopting a more efficient structure, replacing the 'big eater' control branch with a 'light meal package' composed of a small number of ResNet blocks, reducing the model size.