The temperature dependence of near-infrared around 1 μm emission properties of Yb-doped 55Bi2O3-25B2O3-10SiO2-(10-x)Ga2O3-xYb2O3（x=0.5, 2.0, 5.0) glasses is investigated. Emission spectra, covering a major 975 nm fluorescence peak with a minor 1003 nm weaker peak, are determined within the temperature range of 9 K~350 K. The full width at half-maximum of them does not change a lot. An important cause for the width of fluorescence line is inhomogeneous broadening from this bismuth-based glass host. On the other hand, the electron-phonon coupling will have some influence on the emission spectrum and emission lifetime. For the temperature dependence of lifetime, a longer emission lifetime of Yb at higher temperature region indicates a more significant influence of radiation trapping effect.