SnO₂ nanoparticles have been immobilized inside MIL-101(Cr) crystals achieving the novel SnO₂@MIL-101(Cr) anode material with a multiple-core/shell structure. Under the protection of MIL-101(Cr) shell, the pulverization and aggregation of SnO₂ during cycling have been diminished. Both good cyclability and rate capability with a reversible capacity of ∼510 mA h g⁻¹ at 0.1C after 100 cycles have revealed.