Star clusters are likely to be formed with initial angular momentum. <br />
Dynamical evolution of rotating star clusters has been investigated <br />
by the Fokker-Planck method and N-body integration. The rotation is <br />
found to accelerate the core collapse as well as the post collapse <br />
evolution. The angular momentum is transferred outward through the <br />
relaxation process. The computational details and the astrophysical <br />
implications of our recent findings will be presented. <br />