Abstract: Static leaching tests were performed with the simulated high level waste (HLW) glass P19-5 at different temperatures in deionized water. The leaching behavior of the glass and the retention mechanism of Ce were discussed after testing the normalized elemental mass loss and the evolution of morphology and composition of the surface layer. At 25, 40， and 70 ℃, the leaching rates of the glass are at the same level and one order lower than that at 90 ℃. The release of Gd and Ce is 2-3 orders lower than other main components（Si, B, Li, etc）of the glass, and most of them are reserved in the surface layer by in situ reconstruction.