Using the quasi-classical trajectory (QCT) method, this paper has explored the product rotational polarization for the reaction O (3 P ) + HCl → OH + Cl on the 3 A ″ potential energy surface constructed by Ramachandran B et al. (Ramachandran B et al., J. Chem. Phys.119: 9590, 2003). The distributions of product polarization P(θr),P(φr) and the generalized polarization-dependent differential cross-sections (2π/σ)(dσ00/dσt) and (2π/σ)(dσ22+/dωt) have been calculated. The results indicate that the vibrational excitation of HCl has a considerable influence on the distribution of the k-j′ correlation and the k-k′-j′ correlation.