The Eu 3+ probe technique is used to the analysis of borate-lead glasses system of (79 5-x)BO 3/2 -(20+x)PbF 2-0 5Eu 2O 3(x=0,10,20,30,40). The excitation spectra for several glasses are measured, the phonon side-band spectra and electron-phonon coupling constant are obtained. The multi-phonon non-radioactive transition probabilities are discussed. The emission spectra of Eu 3+ originated from 5D 0→ 7F 0, 7F 1, 7F 2 transitions under 362 nm excitation in this glass system and the optical transitions J-O parameter Ω 2 are obtained, the structure properties of borate-lead glasses are analysed.