Synthesis　of　transition　metal　selenides　from　metal-organic　frameworks　(MOFs)　has　become　one　of　the　common　methods,　and　their　structure　and　properties　are　depended　upon　the　MOFs.　In　this　study,　different　Fe-based　MOFs　have　been　used　to　prepare　Fe3Se4/carbon　composites　by　synchronous　selenization　and　carbonization　process.　The　Fe3Se4/carbon　composite　obtained　from　Fe-Mil-88A　possessing　a　rice-like　structure　is　composed　of　numerous　Fe3Se4　nanoparticles　and　abundant　carbon,　which　has　been　observed　by　scanning/transmission　electron　microscope.　X-ray　photoelectron　spectrums　and　thermogravimetric　analysis　indicate　this　Fe3Se4/carbon　composite　composed　of　major　Fe2+　and　minor　Fe3+　has　a　carbon　content　of　12.4wt%.　As　anode　material　of　lithium-ion　battery,　the　composite　can　deliver　a　discharge　capacity　of　707.4　mAh/g　at　0.2　A/g　after　100　cycles.　Even　at　a　high　rate　of　5　A/g,　it　still　reaches　a　capacity　value　of　566.7　mAh/g.　As　anode　material　of　sodium-ion　battery,　this　composite　retains　a　discharge　capacity　of　417.3　mAh/g　at　0.2　A/g　after　50　cycles,　and　a　capacity　value　of　153.4　mAh/g　can　be　reached　at　a　high　rate　of　5　A/g.　The　good　electrochemical　performances　are　partially　determined　by　high　contribution　of　capacitive-controlled　behaviors　from　the　investigation　on　cyclic　voltammetry.　The　electrochemical　performance　of　this　composite　is　better　than　that　of　the　other　one,　which　is　derived　from　Fe-Mil-88B.　The　different　energy　storage　performances　determined　by　their　structural　difference　also　have　been　discussed　in　the　text.