The invention relates to a method of quickly recovering paleo-water-depth of a carbonate platform in the field of petroleum exploration and development technologies. According to the method, a high-energy particle beach is judged through comprehensive analysis of sedimentary lithology, a biomarker, a sedimentary structure and other identification signs, and a shallow water environment and a relatively deep water environment are identified with the beach being an origin; then the particle beach is further refined through particle content, a particle type and a cementing mode, and paleo-water-depth assignment is performed on the particle beach according to tidal law statistical analysis and wave hydrodynamic analysis on all elements (the sedimentary lithology, the biomarker, the sedimentarystructure and other identification signs as well as the particle content, the particle type and the cementing mode); and last, the different elements are subject to weighted integration, paleo-water-depth recovery values at different positions of the whole platform are obtained through formula calculation, then a paleo-water-depth planar spreading map of the carbonate platform is obtained, and therefore the purpose of quick recovery is achieved. The method lays a reliable geological foundation for palaeoenvironment analysis and reservoir formation and distribution research.