Addressing the lack of 3D annotation layout evaluation paradigms in visualization and VR domains, we propose for the first time applying Multimodal Large Language Models (MLLMs) to this field for automatic layout evaluation. Based on the PartNet dataset, we construct a dataset with annotation layouts in 3D scenes, formulate a quantitative evaluation system comprising readability, unambiguity, compactness, alignment, and aesthetics, and utilize knowledge distillation to generate a structured scoring dataset. We fine-tune lightweight models via LoRA technology to achieve efficient deployment. This method achieves accurate identification and quantitative scoring of various layout defects such as label occlusion and leader line intersection, providing a robust foundation for annotation layout evaluation in complex 3D scenes.