Natural　hydraulic　lime　(NHL)　is　used　as　a　grouting　material　in　the　restoration　of　ancient　buildings,　the　formation　and　evolution　of　its　early　workability　are　crucial　for　the　reliability　of　the　restoration　effects.　This　paper　conducts　an　in-depth　study　on　the　effects　of　water　to　binder　(w/b)　ratio　and　polycarboxylate　superplasticizer　(SP)　dosage　on　the　viscoelastic　properties　of　fluid-solid　transition　process　in　NHL　paste　through　tests　on　the　fluidity,　rheological　characteristics,　micro-rheology,　hydration　heat　release,　and　early　phase　composition.　The　results　show　that　the　fluidity　of　NHL　paste　significantly　increases　with　increasing　w/b　ratio　and　SP　dosage,　while　its　yield　stress　and　plastic　viscosity　show　downward　trend,　and　it　has　shear　thinning　characteristics.　In　the　initial　stage,　elevated　w/b　ratio　leads　to　the　significant　reduction　in　both　macroscopic　viscosity　index　(MVI)　and　elastic　index　(EI)　of　NHL　paste,　along　with　delayed　rapid　increases,　the　effect　is　even　more　pronounced　by　adding　SP.　High　w/　b　ratio　or　adding　SP　are　able　to　enhance　the　dispersed　state　of　solid　particle　in　NHL　pastes,　the　viscoelastic　transition　point　of　NHL　paste　is　delayed　and　the　viscoelastic　transition　time　is　prolonged.　Increasing　the　w/b　ratio　and　adding　SP　both　inhibit　the　early　dissolution　and　hydration　of　NHL　paste,　affecting　the　fluid-solid　transition　process.　Overall,　as　the　spatial　network　gradually　develops　by　the　solid　particles　dissolve　and　continue　to　hydrate,　NHL　paste　undergoes　a　transition　from　a　viscous　fluid　to　an　elastic　semi-fluid　state,　exhibiting　low　strength　and　noticeable　plasticity　characteristics.　With　further　hydration,　NHL　paste　initiates　consolidation　and　hardening　processes,　progressively　transforming　from　a　plastic　semi-fluid　into　hardened　paste.