In this work, a disposable bismuth film electrode based on ERGNO film was developed, and further used to simultaneous determination of Cd2+ and Pb2+ by SWASV. With the excellent properties of ERGNO film and good stripping characters of bismuth film, the developed electrode exhibited sharp and high peaks for target metal ions. The linear range of the bismuth film electrode was from 1.0 μg L−1 to 60.0 μg L−1 for both metal ions with a deposition potential of −1.2 V and a deposition time of 150 s. The detection limits for the determination of Cd2+ and Pb2+ were 0.5 μg L−1 and 0.8 μg L−1, respectively. In addition, the disposable electrode demonstrated high selectivity for the target metal ions determination and was applied to quantitatively analyze Ca2+ and Pb2+ levels in milk sample extracts with satisfactory results. This work provides a useful avenue for implementing ERGNO as a new generation of electrochemical transducer in heavy metal ions sensing, which could expand the scope of graphene based electrochemical sensing devices and hold great promise for routine sensing applications.