In this paper, we will present a new voltage-mode first-order filter circuit. This circuit using one inverting second generation current conveyors (ICCII), one capacitor and one resistor. It can realize the first-order filter function with allpass response .It also has characteristic below:Use less active and passive component ,floating resistor and capacitor . We use HSPICE and MATLAB to simulate this filter circuit. The results are close to theoretical predictions.