Three　ferrocene-based　sulfonyl-substituted　dihydropyrazoles　3a-c　have　been　synthesized,　from　the　corresponding　α,β-unsaturated　diketones,　and　fully　characterized.　The　crystal　structures　of　3a-c　have　been　confirmed　by　X-ray　crystallography,　and　electrochemistry　behaviors　of　3a-c　have　been　examined　by　cyclic　voltammetry　(CV).　Representatively,　the　mechanism　of　the　electron　transfer　in　redox　process　of　3a　has　been　verified　by　density　functional　theory　(DFT)　calculation.　It　has　been　found　that　the　activity　of　catalytic　decomposition　of　ammonium　perchlorate　(AP)　is　significantly　lowered　(by　62.9-104.7　°C)　with　an　addition　of　3a-c.　We　expect　that　the　ferrocene-based　sulfonyl　dihydropyrazole　derivatives　would　have　a　great　value　in　burning　rate　catalyst　as　composite　solid　propellants.　©　2014　Elsevier　B.V.　All　rights　reserved.