In　this　study,　Enzyme-Induced　Carbonate　Precipitation　(EICP)　combined　with　polypropylene　fiber　technology　was　used　to　solidify　desert　sand,　the　orthogonal　theory　was　used　to　design　the　different　levels　of　the　five　test　variables　of　cementation　solution　concentration,　urease　concentration,　enzyme　gel　ratio,　fiber　length　and　fiber　content,　and　the　curing　effect　of　EICP　combined　with　polypropylene　fiber　was　studied　by　macroscopic　test　of　unconfined　compressive　strength　and　calcium　carbonate　content　and　microscopic　test　of　scanning　electron　microscope　(SEM)　and　nuclear　magnetic　resonance　(NMR).　The　results　show　that　the　primary　and　secondary　order　of　the　influence　of　the　five　test　variables　on　the　unconfined　compressive　strength　and　calcium　carbonate　content　is:　fiber　content　＞fiber　length　＞urease　concentration　＞enzyme　gel　ratio　＞cementation　solution　concentration,　in　which　the　fiber　length　and　fiber　content　had　a　significant　effect　on　it,　and　the　urease　concentration　had　a　little　significant　effect　on　it.　The　incorporation　of　polypropylene　fiber　promotes　the　deposition　of　calcium　carbonate,　restricts　the　displacement　and　deformation　of　sand　particles,　effectively　fills　the　pores　between　particles,　significantly　reduces　the　pore　size,　and　improves　the　pore　structure,　which　provides　a　reference　for　subsequent　research　and　practical　geotechnical　applications.　©　Korean　Society　of　Civil　Engineers　2024.