Microcapsules with excellent fluorescence enhancement arc assembled by using cetyltrimethylammonium bromide (CTAB) micelles to enrich Eu(DBM)(3)Phen (DBM and Phen are dibenzoylmethane and 1,10-phenanthroline, respectively) on CaCO3 particles by the LbL technique. Compared to microcapsules without micelles, the fluorescence intensity of microcapsules with micelles increases 9 times, larger than the 6 times increase of absorbance. This unexpected fluorescence enhancement is attributed to the "fluorescence protector" effect of CTAB micelles in microcapsules. Energy loss from nonradiative deactivation through energy transfer to high-energy O-H vibrations from the emissive D-5(0) state of Eu(III) is greatly prohibited. The new strategy using micelles in this work not only enriches europium complexes during assembly in aqueous solution hut also yields a fluorescence enhancement ratio larger than the enrichment ratio.