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With the increasing amount and extensive usage of 3D models in many areas, there is a demanding need for developing 3D models retrieval systems. Because of the importance of appearance properties in content-based 3D model retrieval system, the paper presents a 3D model classification method based on color information. Firstly, the system architecture is introduced. Next, the proposed method that adopts Hopfield neural network to analyze the color features of 3D models is presented. Experimental results of classifying 3D VRML model using the proposed method are then analyzed and have shown the effectiveness of our method.