In this study, 1.5 ℃ warming and 2.0 ℃ warming scenarios were determined by four sets of data from CMIP5 models including IPSL-CM5 A-LR(RCP2.6), GFDL-ESM2 M(RCP4.5 and RCP6.0), NorESM1-M(RCP4.5). Simulations of wheat grain yield were performed using the DSSAT v4.5 crop model. Results show that:(1) The air temperature within the wheat growing season would increase 1.17 ℃ and 1.81 ℃ above the preindustrial levels, respectively, at the global warming of 1.5 ℃ and 2.0 ℃. The warming degree of spring wheat areas...