Abstract: In order to untangle serious distortion in a hohlraum for ICF (Inertial Confinement Fusion),a nine-point rezone strategy is developed.The scheme is approximate to an elliptic or a parabolic equation,and preserves spherical symmetry.The scheme includes several forms of the nine-point rezone scheme according to different requirement in practical problems.The ALE (Arbitrary Lagrangian-Eulerian) method is used in code LARED-H. Suitable results for a hohlraum is illustrated.

Key words: improved nine-point rezone strategy, distorted grid, arbitrary Lagrangian-Eulerian method