Liquid water is of great interest due to its important role in many processes in nature.We focus on quantum dynamical effects and the isotopic effects in Raman spectra of liquid water [1] using the linearized semiclassical initial value representation(LSC-IVR)with the local Gaussian approximation(LGA)[2-4] and an ab initio-based,polarizable water model for inter-and intramolecular vibrational spectroscopy(POLI2VS)[5].