Abstract: Chinese characters composed of strokes are the great creation of the Chinese nation. The scientific and rational stroke structure determines the beauty of the font of the character. This paper introduces the concepts of the centroid and the moment of inertia. Through the image processing analysis, the normalized font image centroid and the font structure moment of inertia are obtained. These two parameters are used to quantitatively describe the barycenter and the word weight of the font structure. The proposed method can be used to evaluate the font structure of Chinese characters and provide a reference for Chinese character font design.