Abstract: Hand-drawn style and physical movements of cloth are closely coupled in hand-drawn cloth animation.In this paper,a novel approach is presented to efficiently generate hand-drawn cloth animations by 2D drawings and the physical laws of cloth movements.It firstly recovers the kinetic parameters of cloth motion inside the 2D drawings in an optimal sense,and then by the principles of traditional key-frame animation,the in-between frames are automatically created by physical simulation based on interpolating the kinetic parameters from key frames.By a single reference hand-drawn frame,it also enables the animator to generate hand-drawn cloth animation sequence via extrapolating the kinetic parameters recovered from reference frame according to the specified motion capture data.GPU based computing is employed to speed up the time-consuming physical simulation of cloth motion for the calculation of kinetic parameters.The experimental results clearly demonstrate that the cloth animation clips generated by our method effectively convey the physical principles of cloth motion while well-preserving hand-drawn styles.