Abstract: It is hard to achieve favorable prospecting effect by using IP technology of grounding mode in the working areas with the surface covered by gravels or areas with worse grounding conditions.However,Transient Electromagnetics Method of using phrase to phrase loops has advant ages that can not be replaced by other methods as no grounding need,high diastropic resolution,and the parameter that can make use of is more,being applicable to various geography environment work,and be subjected to the topographic influence smaller,and favorable effect of mineral prospecting.Rational setting of the emission current is particularly supposed to be noticed,otherwise to be different exploration results.Power fulemission current does not necessarily help to find the abnormality caused by low resistive anomaly and improve abnormal curve amplitude accordingly,which will impact on the final exploration.The importance of setting emission current properly is exemplified by the mineral areas in Dong mozhazhua and Narigongma.