Eu3+-modified　1,8-naphthalic　anhydride　(ENC)　as　a　fluorescent　tracer　was　successfully　prepared,　and　then　the　effects　of　various　solvents,　including　DMF,　DMSO,　CH3OH,　C2H3N,　and　C3H6O,　on　the　fluorescent　performances　of　obtained　ENC　were　investigated　by　means　of　Ultraviolet-visible　absorption,　Photoluminescence　performances,　Fourier　transform　infrared　spectroscopy,　Thermogravimetric　analysis,　and　Time-resolved　fluorescence　measurements.　The　results　showed　that　the　inductive　force　strength　derived　from　Eu3+　ion　was　gradually　decreased　with　increasing　polarity　of　used　solvents　as　in　order:　C3H6O　＜　C2H3N　＜　DMF　＜　CH3OH　＜　DMSO,　while　the　co-effects　of　various　solvents　involving　hydrogen　bonding　were　increased.　Meanwhile,　the　influences　of　mentioned-above　interactions　on　the　luminescence　features　of　resultant　ENC　were　remarkable,　which　demonstrated　the　gradual　decreasing　of　fluorescent　intensity　of　characteristic　peaks　by　accompany　with　obvious　red-shifting　of　their　emission　wavelength.　Furthermore,　the　fluorescence　decay　behaviors　of　ENC　were　elucidated,　and　therefore　its　luminescence　mechanism　was　put　forward.