Chromatic aberration associated with large-aperture lens in high-energy petawatt laser system affects the focused intensity. Diffractive optical element has been used to pre-correct primary axial chromatic aberration. Temporal distortion and spatial convergence of focal spot can be improved. A single diffractive chromatic corrector is designed with zero power facilitating alignment and minimal groove of several micrometers. It will serve as a new proposal for correction of chromatic aberration on high energy petawatt laser system.