This article discussed the influence of the low intensity pulse electromagnetic field to cell membrane, establishes the cell membrane electroporation model, discusses under the low intensity electromagnetic pulse function the cell membrane electroporation theory mechanism. Through the computation under the low intensity electromagnetic pulse function the cell membrane both sides' ion concentration change, has proven under the low intensity electromagnetic pulse function in cell membrane ion concentration sharp growth. This to studies under the low intensity pulse electromagnetic field ion channel's characteristic, as well as the cell membrane electroporation research has the vital significance.