Tm3+/Yb3+,Ho3+/Yb3+ and Tm3+/Ho3+/Yb3+ doped bismuth tellurite glasses exhibiting multicolor upconversion fluorescences are fabricated,and the upconversion fluorescence spectrum is investigated under 974 nm laser excitation. Because the blue upconversion luminescence of Tm3+ is a three-photon process,the increasing rate of blue emission is higher than the green and red ones in the Tm3+/Ho3+/Yb3+ triply doped bismuth tellurite glasses. The color coordinates of the sample are calculated,and the dependence of color coordinates on the pumping power is described. With the pumping power increasing,the color coordinate marks move along the down-left direction in 1931-CIE chromaticity diagram. The results indicate that the relative ratios of green,red and blue emission intensities can be tuned by adjusting pumping power,and white lighting could be realized in Tm3+/Ho3+/Yb3+ triply doped bismuth tellurite glasses. It confirms that Tm3+/Ho3+/Yb3+ doped bismuth tellurite glasses are effective upconversion materials and will be potentially employed in the application field of multicolor display and white light illumination.