Carving surface was directly modeled using the quadratic Bezier curve surface according to the grey or color pixels information of the image with clear texture and simple construction. This method segmented the image, analyzed and computed the pixel values and their position parameters for the sub-images, and used those values as feature parameters for constructing the surface patches of the model. The modeling was implemented by limited smooth connection of surface patches. The established surface model can describe the basic structure characteristics of the original objects in the image, and satisfy the requirements of digital carving processing. It has low complexity and strong practicability.