Abstract: More and more researches have recently been focused on the simulation of Chinese calligraphy and painting by computer. In this paper, a virtual brush model based on experience is introduced to simulate Chinese calligraphy and traditional Chinese painting in real time. By introducing actual calligraphy experience, the proposed model calculates the trajectory area as the virtual brush sweeps along the paper in much less time and more vividly. A lot of simplifications are also introduced for the sake of efficiency. Its novel feature successfully enables the model to overcome the poor expressional ability of a virtual brush system built on traditional particle system and avoids the complex evaluation of a virtual brush with physical solid model. The model, derived from the actual calligraphy and painting experience, considerably improves the performance of the simulating system and maintains the painting effect comparable with that of the real brush by supporting special brush effect such as dry brush, feng and saturation.