In the optical parametric chirp reversal pulse amplification (OPCPA) system, both stretcher and compressor can use parallel grating pair, to prevent the spectral shear effect in conventional stretcher and simplify the structure of the stretcher. The effect of residual dispersion on the output pulse waveform is analyzed, the corresponding theoretical model and numerical calculation method are given, and a third-order dispersion-compensation scheme for OPRCPA system is proposed in this paper.