Sodium borosilicate glass incorporated with Ag-In2O3 nanostructures (Ag-In2O3 glass), which is prepared through sol-gel method plus a controlled gas, is a highly transparent to realize the enhanced fluorescence. Microstructure analysis of the glass show that the In elements exist in the non-crystalline In2O3 forms, however, the Ag elements exist in the Ag crystalline nanoparticles that have small size, narrow distribution, and good dispersion in the glass. Comparing with the glass incorporated with individual Ag nanostructure (Individual Ag glass) and the pure sodium borosilicate glass (Pure glass), the Ag-In2O3 glass exhibits an enhanced fluorescence. The local electric field induced by the surface plasmon resonance (SPR) effect of the Ag nanoparticles, the small particle size of the Ag nanoparticles, and the energy transfer between the Ag nanoparticles and In3+ ions can be ascribed to the enhanced fluorescence in the Ag-In2O3 glass. In addition, the crystallization of the glasses is also discussed in detail by combining each step of the annealing treatment. (C) 2016 Elsevier B.V. All rights reserved.