Many conventional methods of testing strong and pulsed electromagnetic fields,the ones used in radars for example,had deficiencies due to the difficulty in obtaining simultaneous information about the electromagnetic field’s peak both in the time domain and in the frequency domain.With regard to this problem,after analyzing the time-domain and the frequency-domain characteristics of radar pulsed signals,we propose a new time-frequency combination test method based on the correction of the test parameters,as well as its correction method at different bandwidths.The test method is applied in a quick test of a high-power pulsed radar signal,and the corrected results have error less than 1 dB in both the time domain and the frequency domain,which indicates that the proposed time-frequency combined method is effective in testing strong and pulsed electromagnetic fields. Many conventional methods of testing strong and pulsed electromagnetic fields, the ones used in radars for example, had deficiencies due to the difficulty of acquiring simultaneous information about the electromagnetic field’s peak both in the time domain and in the frequency domain. , after analyzing the time-domain and the frequency-domain characteristics of radar pulsed signals, we propose a new time-frequency combination test method based on the correction of the test parameters, as well as its correction method at different bandwidths.The test method is applied in a quick test of a high-power pulsed radar signal, and the corrected result has error less than 1 dB in both the time domain and the frequency domain, which indicates that the proposed time-frequency combined method is effective in testing strong and pulsed electromagnetic fields.