Traditional　metal　recycling　methods　urgently　need　improvement　due　to　high　energy　consumption　and　environmental　pollution　issues.　Against　this　backdrop,　developing　a　reusable,　novel　green　solvent　from　eco-friendly　raw　materials　through　simple　preparation　methods　has　become　crucial.　Deep　eutectic　solvents　(DES)　are　considered　an　ideal　alternative　to　traditional　organic　solvents　due　to　their　tunable　polarity,　low　toxicity,　environmental　friendliness,　and　ease　of　synthesis.　DES　can　effectively　extract　metals　from　complex　waste　systems　through　selective　dissolution　and　formation　of　metal　complexes,　especially　in　recovering　valuable　metals　such　as　lithium,　nickel,　and　cobalt　from　waste　lithium　batteries　and　other　waste　materials.　Its　structural　design　allows　DES　to　efficiently　and　accurately　recover　target　metals,　showcasing　broad　application　potential　in　solid　waste　recycling.