In order to illustrate the structural adaptability, precision and accuracy of different PM correction models in wheat fields of Yongnian District of Handan City, the field evapotranspiration during key growth stages (from April to May) of winter wheat was simulated respectively through PM-1, PM-2 and PM-3, and simulation results were compared with the water balance results. The results show that the simulated evapotranspiration precision of PM-1 is the highest, of which the corresponding R 2 and GPI values are 0.773 and 3.105 respectively; the precision of PM-3 is the lowest, of which the corresponding R 2 and GPI are 0.701 and -2.904 respectively. The temporal distribution equilibrium of PM-1 simulated evapotranspiration is the best and that of PM-2 is the worst. These PM correction models have their own advantages and limitations, and PM-1 is more suitable for the evapotranspiration simulation of Yongnian District. The results can supply reference to the disclosure of wheat-fields evapotranspiration law in key growth stages and provide basis for the inversion and revision of remote sensing evapotranspiration in large scale.