The recrystallization processes of the radiation damaged (metamict) zircon were studied using IR-spectroscopy. It was shown that the intensity of valency and deformative vibration modes of Si04 change slightly at the initial stages of recrystallization and increase greatly above 500 °C. This suggests that quantity of crystalline regions increase during annealing. On the contrary, IR bands associated with metamict regions (1087 и 518-520 сm-1) increase until 500 °C and diminish after this point. The results suggested the stages of recrystallization process in zircon. It was concluded that the IR-spectroscopy permit to get an information about structural transformations in zircon even at the initial stages of recrystallization (below 500 °C).