A method, an apparatus and a terminal for electromagnetic radiation conversion relates to the field of electromagnetic radiation protection technique, the method includes the steps of receiving a high frequency electromagnetic radiation by a high frequency receiving module, converting the high frequency electromagnetic radiation into a low frequency electromagnetic radiation by a frequency conversion module, and emitting, by a low frequency emission module, the low frequency electromagnetic radiation converted by the frequency conversion module. The method, apparatus and terminal for electromagnetic radiation conversion can be used to convert the harmful electromagnetic radiation emitted by the terminal into the electromagnetic radiation which benefits the human health and can also have a cosmetic effect.