Recently,　great　interest　has　been　generated　in　the　synthesis　and　study　of　heterocyclic　derivatives　containing　one　or　more　ferrocenes,　since　these　derivatives　have　potential　applications　as　new　functional　materials　in　several　areas.　As　a　stable　and　readily　oxidizable　organometallic　complex,　ferrocne　has　been　widely　employed　in　multifunctional　systems,　which　have　exhibited　potential　utilizations　in　electrochemical　sensors,　molecular　recognition　and　ethylene　oligomerization　catalysts.　Combining　the　considerations　above,　we　designed　a　simple　and　general　approach　to　synthesis　three　5-ferrocenyl-pyrazoline　derivatives(3-5).　The　structures　of　all　the　products　were　determined　by　IR,　MS,　1H　NMR,　13C　NMR　and　elemental　analysis.　The　crystal　structure　of　compound　4　was　proved　by　single　crystal　X-ray　analyses.　Moreover,　compounds　3-5　were　characte-rized　by　CV,　UV-Vis　absorption　and　fluorescence　spectrometry.　Density　functional　theory(DFT)　calculation　was　adopted　to　explain　these　phenomena.　These　compounds　will　be　used　as　electrochemical　sensors　and　ethylene　oligomerization　catalysts.