In this study, a Si-Na-Zn-Al system was chosen as the glass matrix and Ce 4+ and Ag + were chosen as the photosensitive and thermal factors, respectively. The precipitation of Ag 0 clusters in glass and their effects on the transmittance and crystallization of glass were studied by optimizing the ultraviolet exposure dose and heat treatment conditions. Results indicate that the structure of Ag 0 clusters and the precipitation of NaF crystals can be controlled by controlling the ultraviolet exposure dose and heat treatment conditions. Uniform Ag 0 clusters and NaF crystals can be obtained when the ultraviolet exposure dose is 4 J/cm 2 at 315 nm, the nucleation temperature is 580 ℃, and the crystallization temperature is 650 ℃.