The invention relates to the technical field of earthing, in particular to a method for verifying maximum temperature rise calculation accuracy by a simplified model of a deep well earthing pole. Thecalculation accuracy of the simplified model of the deep well earthing pole can be favorably verified. The embodiment of the invention provides the method for verifying the maximum temperature rise calculation accuracy by the simplified model of the deep well earthing pole. The method comprises the following steps that: analyzing the direction and the dispersion space of the current field of the deep well earthing pole, determining a maximum current density position, and simplifying a relative relationship between a model and a practical model; analyzing the direction and the heat dispersion space of the temperature field of the deep well earthing pole, and determining a relative relationship among the maximum temperature rise position, the simplified model and the practical model; and according to the determined maximum temperature rise position, the simplified model and the practical model, verifying the maximum temperature rise calculation accuracy by the simplified model. The method can be applied to the design and performance detection of the deep well earthing pole.