To verify the applicability of the WRF/WRF-Hydro land surface parameterization scheme in the meteorological and hydrological simulation of the Upper and Middle Yalong River Basin, this paper adopts the WRF/WRF-Hydro coupling approach. Based on the albedo of the snow surface layer, the temporal change of snow/soil temperature, and the change of the soil impedance of evaporation/sublimation, eight groups of land surface parameterization combination schemes are constructed. Simulation studies on the rainfall-runoff period in 2012 are conducted to further analyze the effects of various land surface process parameterization schemes. The results show that: (1) The cumulative rainfall of each scheme under WRF simulation deviates negatively from the observed values, and the overall difference is not significant, but spatially various schemes show different distributions of storm centres; (2) The best rainfall-runoff simulation can be obtained when the albedo of the snow surface layer, the temporal change of snow/soil temperature, and the soil impedance of evaporation/sublimation are set as BATS, RSURF, and SLAB, respectively; (3) The optimal result for rainfall-runoff simulation are achieved when the temporal change of snow/soil temperature is set as BATS, RSURF, and SLAB.; (4) The use of PCI as a soil impedance parameter for evaporation/sublimation introduces significant cumulative rainfall fluctuations, potentially leading to poorer flow simulation. Therefore, it should be avoided as a choice in coupled simulation.