Temperature dependence of kinematic viscosity of As-Te system melts at temperatures higher melting points was measured. Supposing that in the melt chemical order of AsTe_1.5 was remained, concentration dependence of viscosity was good described on the base of model of associated solutions. Temperature dependence of viscosity of chalcogenide melts is satisfactory approximated with Janckel equation, which supposes exponential dependence of free energy of viscosity activation on temperature.