Abstract: Aimed at detecting hardware Trojans(HTs), the characteristics of CMOS circuits are analyzed, noncomplementary inputs of DCVSL(Differential Cascade Voltage Switch Logic) caused by the active HT result in abnormal short-circuit current. A hardware Trojan detection method based on inherent feature of DCVSL and average dynamic circuit current is proposed. By HSPICE Mento carlo simulation circuit in which we use a C432 standard circuit with a small hardware Trojan as a test circuit, we detecte the existence of Trojan in the circuit, and verify the validity of the method.