Novel hierarchical MoS₂/graphene (MoS₂/G) nanobelts were synthesized through a facile hydrothermal reaction. In this work, the MoO₃ nanobelts and graphene nanosheets played the important roles in the preparation of the nanosheet-built nanobelt architecture. Ascribed to the ordered porous hierarchical nanobelt structure and introduction of graphene, the hybrid electrode exhibits much higher electrochemical capacity than pure MoS₂ particles. Moreover, the unique ordered hierarchical architecture could greatly relieve the volume change and stack during the electrochemical process, resulting in the excellent cycling stability. Specifically, the hybrid electrode possesses a capacitance of 445.71 F g⁻¹ at 0.8 A g⁻¹ with a high capacity retention of 96.75% at 2 A g⁻¹ after 1000 cycles.