Farmland surface temperature monitoring data precision discrimination method and system

The invention relates to a farmland surface temperature monitoring data precision discrimination method and system. The farmland surface temperature monitoring data precision discrimination method is characterized in that the farmland surface temperature monitoring data precision discrimination method comprises the steps that the surface temperature multi-point observation data of an underlying surface of a to-be-measured farmland is obtained; physiological indexes of crops to be measured in the to-be-measured farmland is acquired; according to the obtained physiological indexes and the mean square error of the multi-point observation data of the surface temperature of the underlying surface at the same time, whether the obtained multi-point observation data of the surface temperature of the underlying surface has operational judgment is judged; the multi-point observation data of the surface temperature of the underlying surface with operational judgment is distinguished into the crop canopy temperature and