The invention relates to a system and method that realize an equal ampere-turns law heavy current; the system comprises a low voltage current source and a multi-path coil; the multi-path coil is winded and connected with the low voltage current source; the low voltage current source is used for forming a low current that passes the multi-path coil, thus forming an equivalent heavy current on the cross section of the multi-path coil; the size of the formed equivalent current is in direct proportion to the turns of the multi-path coil. The system uses the coil formed by multi-core connectors toequivalently amplify the DC low current, thus omitting a complex system that contains a transformer, an inverter and a rectifier. The system is simple, efficient, easy to realize, low in cost, and strong in practical values; the equivalent amplification of the coil can be employed; the turns of the coil can be changed so as to change the equivalent amplification factor, thus realizing continuouslyadjusting of a current from several amperes to tens of thousands of amperes.