Hand natural motion,especially virtual object grasping,is difficult to animate because the hand has not only the high number of degrees of freedom b ut also the need to conform naturally to the object surface.This paper proposes a new approach for modeling the human hand that has natural motion.The human h and is a complex articulated structure.Each finger translates or rotates around its palm,which is determined by joint rotation.According to the anatomical st ructure and the human hand motion characteristics,we establish a virtual ball- a nd-stick geometric model.This hand model can well simulate the movement of the hand is designed.It can analyze the joint characteristics of the hand and the r elationship between the joints.The "divide and conquer" strategy is used to con trol the movement of the opponent model through the principle of kinematics.Neo Axis is used to build 3D scenes simulating realistically hand natural motion whi ch can reduce the cost of coding and improve efficiency.Simplification is more conducive to the analysis of the structure of the human hand,so that the moveme nt of the human hand can be more vividly tracked,and the virtual object can be grasped.Finally,a good verification is made through experiments.The modeling method is simple and easy to implement and can meet the needs of various real-t ime applications.