The invention relates to a new micro power cell applying the microfluidic-chip with multi-channel type. The streaming potential is the main thrust, which is created by Helmholtz-Smoluchowski's electrokinetic principle when electrolytic solution flows through a microchannel. The microfluidic-chip comprises an inflow port, a distributor, a multi-channel, a collector, an outflow port, and a pair of electrodes. The present invention could be applied to a new power source of clean energy.