The　three-dimensional　reconstruction　of　vehicle　surface　point　cloud　can　provide　effective　reference　data　for　robot　path　planning　of　vehicle　surface　spraying.　A　three-dimensional　data　measurement　method　of　vehicle　surface　based　on　line　laser　sensor　is　proposed　in　this　paper.　This　paper　collects　the　point　cloud　information　of　vehicle　surface　by　line　laser　sensor,　extracts　the　effective　three-dimensional　information　of　vehicle　surface.　and　takes　the　regular　block　and　vehicle　model　as　the　experimental　object,　use　the　measurement　system　with　the　sensor　clamped　by　the　manipulator　to　measure　the　three-dimensional　data,　compare　the　point　cloud　data　accuracy　under　different　measurement　depth　and　scanning　speed,　and　reconstruct　the　vehicle　model.　The　research　shows　that　this　method　is　feasible.　©　2022　ACM.