A biometric feature identification device includes a substrate, an electrode layer, and a switch and trace layer. The electrode layer is arranged at one side of the substrate and has a plurality of electrodes. The switch and trace layer has a plurality of switches and a plurality of traces. The switches are provided to divide the plurality of electrodes sequentially or dynamically into at least one sensing electrode group and a plurality of deflection electrode groups corresponding thereto. Each sensing electrode group corresponds to at least two deflection electrode groups. Each sensing electrode group has at least one electrode for sensing. Each deflection electrode group has a plurality of electrodes for deflection.