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Eu-doped oxyfluoride borosilicate glass ceramics containing Ba2GdF7 nanocrystals were prepared under a reductive atmosphere and reduction behavior from Eu3+ to Eu2+ was observed.The photoluminescence spectra of the samples excited at 392 nm showed that, besides the characteristic sharp emissions of Eu3+ ions, a very intense broadband emission of Eu2+ ions centered at 450 nm appeared.The photoluminescence intensity of Eu3+ and Eu2+ ions in the glass ceramics was much stronger than that in the as-made precursor.The long decay lifetimes of Eu3+ and Eu2+ ions evidenced the partitions of Eu3+ and Eu-2+ ions into the Ba2GdF7 nanocrystals.The energy transfer from Gd3+ ions to Eu3+ and Eu2+ ions was confirmed by the exeitation and emission spectra.