Sanitizable　Signature　is　a　digital　signature　variant　that　enables　modification　operations,　allowing　sanitizers　to　alter　the　signed　data　in　a　regulated　manner　without　requiring　any　interaction　with　the　original　signer.　It　is　widely　used　in　scenarios　such　as　healthcare　data　privacy　protection,　social　networks,　secure　routing,　etc.　In　existing　sanitizable　signature　schemes,　anyone　can　verify　the　validity　and　authenticity　of　the　sanitized　message,　which　results　in　costly　certificate　management　overhead　or　complicated　key　escrow　problems.　To　address　these　challenges,　a　designated　verifier　certificateless　sanitizable　signature　scheme　is　proposed.　This　scheme　introduces　the　concept　of　a　designated　verifier　into　sanitizable　signatures,　allowing　sanitizers　to　specify　verifier　for　the　sanitized　message.　Only　the　specified　verifiers　can　verify　the　validity　of　the　message/signature　pair,　ensuring　that　the　message　information　remains　confidential　to　parties　other　than　the　designated　verifiers.　Security　analysis　demonstrates　that　the　proposed　scheme　satisfies　the　properties　of　unforgeability,　immutability,　privacy　and　non-transferability.　Comparative　analysis　demonstrates　that　the　proposed　scheme　provides　additional　support　for　designated　verifiers　compared　to　traditional　sanitizable　signature　schemes,　while　eliminating　certificate　management　and　key　escrow　issues.　We　have　conducted　an　experiment,　and　the　results　demonstrate　that　the　proposed　scheme　displays　excellent　efficiency.