FaceChain-FACT is a zero-cost avatar generation tool. Users don't need to train LoRA models; simply provide a photo to generate a customized avatar. Compared to other commercial applications, our generation speed is 100 times faster, supporting second-level image generation. We integrate a transformer-based facial feature extractor, structurally similar to Stable Diffusion, which can better utilize facial information. We use dense, fine-grained features as facial conditions, resulting in a better character reproduction effect. FaceChain-FACT seamlessly integrates with ControlNet and LoRA plugins for plug-and-play compatibility.