Glass ceramics based on the Li2Ge7O15 is promising material for multifunctional applications. This matter is of interest due to its possible applications as solid electrolytes. LiiGe1O1s in glass state was obtained by fast quenching of stochiometric compound Li2O-7xGeO2. The glass have been heat treated and obtained in three states: i) the samples a in initial glass state; ii)    the samples b obtained by heating of glass up to 870K and further cooled to room temperature; iii)    and the samples c treated by heating of glass up to crystallization temperature (910K). Mo1phology of the samples surface was monitoring using atomic force microscope (AFM) INGENTA. The AFM measurements were erfo1med with s atial resolution near 40 nm. We deal also with photoluminescence (PL) measurements of the mentioned materials. Photoluminescence is a very useful method for investigation of the strncture, dynamic and any other physical propeities of liquids, solids and glasses and cerainics ai·e among them. Some solids reveal luminescence properties without any special dopants, usually they call those dopants as activators of luminescence. Then this intrinsic luminescence shows the state of own defects in solid host. In some cases such type luminescence is related with uncontrolled impurities (ions of heavy metals, transition or rear- ea1th elements). All the PL spectra were measured at low, 4.2 K, temperature. Dependences of the PL and PL excitation spectra on the exciting radiation wavelength O•ex) and on the monitoring wavelength 0.-reg) were measured. The set of the micro-photos of the studied samples was made using optical microscope (fig 1). All samples under study are characterized with intensive PL in visible region of the light. The PL spectra lie in the wide spectral region: from 425 to 800 nm and contain several overlapping wide bands with maximum positions neai· 480, 610, and 675 run. Relative intensity of the bands depends on the type of the samples. The dependence of the PL spectra on A.ex is different for the samples of different types. Obtained results were compai·ed with known literature data about single Li2Ge1O1s c1ystals and nanosized powdered materials of the same composition. These studies have demonstrated a perceptiveness of heat treatment for LiiO-7Geo2 glass ceramics. We hope fuither studies of Li2O- 7Geo2 material will reveal the con-elation between their stmcture and of both electric and optical properties.