Abstract: Chinese calligraphy is a precious Chinese art. It is pictographic and each calligraphist has his own writing style. Even people whose native language is Chinese will have difficulties in writing a demanded beautiful calligraphy style, not to say people who know little about Chinese calligraphy. In order to help people enjoy the art of calligraphy writing and find out the process how it was written, we implement a new approach to animate its writing process by 3D visualization method. In the paper two novel algorithms are also presented to extract the intrinsic feature which is needed to rebuild the writing process: 1) extract strokes order from an offline Chinese calligraphic handwriting; 2) estimate varied stroke's thickness. Finally, experiment result is given to demonstrate the application.