With　the　widespread　use　of　mobile　communication　and　smart　devices　in　the　medical　field,　mobile　healthcare　has　gained　significant　attention　due　to　its　ability　to　overcome　geographical　limitations　and　provide　more　efficient　and　high-quality　medical　services.　In　mobile　healthcare,　various　instruments　and　wearable　device　data　are　collected,　encrypted,　and　uploaded　to　the　cloud,　accessible　to　medical　professionals,　researchers,　and　insurance　companies,　among　others.　However,　ensuring　the　security　and　privacy　of　healthcare　data　in　the　context　of　mobile　networks　has　been　a　highly　challenging　issue.　Certificateless　signature　schemes　allow　patients　to　conceal　their　respective　privacy　information　for　different　sharing　needs.　Nevertheless,　existing　mobile　healthcare　data　protection　solutions　suffer　from　costly　certificate　management　and　the　inability　to　restrict　signature　verifiers.　This　paper　proposes　a　certificateless　designated　verifier　sanitizable　signature　for　mobile　healthcare　scenarios,　aiming　to　enhance　the　security　and　privacy　of　mobile　healthcare　data.　This　scheme　enables　the　sanitization　of　sensitive　data　without　the　need　for　certificate　management　and　allows　for　the　specification　of　signature　verifiers.　This　ensures　the　confidentiality　of　medical　data,　protects　patient　privacy,　and　prevents　unauthorized　access　to　healthcare　data.　Through　security　analysis　and　experimental　comparisons,　it　is　demonstrated　that　the　proposed　scheme　is　both　efficient　and　effectively　ensures　data　security　and　user　privacy.　Therefore,　it　is　well-suited　for　privacy　protection　in　mobile　healthcare　data.