Abstract: The rotation about a fixed point of the deformable body has been attented in the area of gymnastics and spacecrafts nowadys. It is the extension of the Rotation about a fixed point of the rigid body. In this paper first order differential equitions are derived from the genaral low of angular momentum, and the numerical solution and some graphic expressions of the motion are conveniently obtained with the help of the microcomputer. Two examples are used to expeain how the numerical methods are applicatod.