A series of (Gd2-xLix)Ti2O7-x with x = 0.040-0.110 was first reported. Parent compound with 2x moles of LiO0.5 self-flux was prepared at 1250 degrees C and abbreviated as GLT-2L. Relative density of all the samples is higher than 92%. By the addition of flux and Li ions substitution, preparation temperature is lowered for more than 300 degrees C. Comparing the unit cell a-axis, GLT with a formula as (Gd2-xLix)Ti2O7-x without flux addition has exactly the same as the GLT-2L with the same x. By the addition of flux, materials become more compact and grains grow bigger for the GLT-2L than the corresponding GLT samples. Electrical conductivity of a GLT-2L with x = 0.110 at 700 degrees C is 3 times larger than the measurements done by other research groups in the Gd2Ti2O7. In order to demonstrate the successful substitution of the Li ion into the Gd site, a series of GT samples was prepared with a formula of (Gd2-xLix)Ti2O7-1.5x. With the same amount of x, every GLT samples have a longer unit cell a-axis than that of the GT. The difference is caused by the substitution of the Li ion into the Gd site. Valence of the Ti atoms of the GLT-2L samples is slightly less than 4 studied by the XANES spectroscopy. (C) 2013 Published by Elsevier Ltd.