We investigate the subgap spectral and the nonequilibrium transport properties of a molecular quantum dot embedded between superconducting and metallic electrodes with strong electron-phonon interaction.We employ the Lang-Firsov transformation to eliminate the electron-phonon interaction and then use an extended nonequilibrium Green function method for the calculations of electron spectrum and current,which includes a resummation of the dominant Feynman diagrams from the perturbative expansion in the coupling to the leads and so is called dressed tunneling approximation in the polaronic regime.[1]It is shown that using this scheme we can derive explicit expressions for the elastic and inelastic contributions to the Andreev current,therefore this scheme provides a valuable and reasonable method to analyze the phonon-assisted subgap tunneling in the ploaronic regime.Finally,the results for the spectral and transport properties are compared with those from other simpler approaches for a wide range of parameters.