The invention discloses an operation characteristic evaluation method of transformers based on environmental influencing factors, and the transformers include electromagnetic and electronic transformers. The method comprises that standard current and voltage transformers are connected to the examination platform via a switch unit; a first data collection module sends collected secondary voltage operation data of the voltage transformer to be measured to a data processing module; a second data collection module sends collected secondary current operation data of the current transformer to be measured to the data processing module; a third collection module sends collected secondary current value and secondary voltage value of the standard current transformer and the standard voltage transformer respectively to the data processing module; and the data processing module obtains a ratio error value and a phase error value of the voltage transformer to be measured and a ratio error value and a phase error value of the current transformer to be measured by calculation according to the above data, and the operational error characteristics of the transformers in different environmental influencing factors are analyzed.