In this paper, we propose the indirect measuring method for the flow-through current using multi-output MOSFETs, a MOSFET-type sensor that is expected to reduce the cost, size, and size of sensors. We design and fabricate multi-output CMOS inverter to detect the flow-through current indirectly using 0.18µm CMOS technology. As a result, we realize that it is possible to detect the through-current indirectly by reading the voltage from the output terminal located on both sides of the channel in MOSFET.