The effects of TiO2 and K2O on the structure and morphology of low melting point Bi2O3-B2O3-P2O5 glass powder were studied by XRD, FTIR and Raman. Results show that the added modifiers TiO2 and K2O entered into the glass powder network, resulting in changes in the structure and morphology of the glass powder. With the increase of K2O content, the glass powder became dispersed small particles, while the increase of TiO2 content promoted the growth of larger glass powder particles. This research is beneficial to passivation and protection of semiconductor materials.