The glass formation regions are determined in the Ga₂S₃-GeS₂-MCl (M = Li, Na, K, Cs, Ag, Tl) and GaI₃-NaCl systems. It is noted that the formation of complex structural units such as MGaS_3/2Cl is favourable for increasing the glass-forming regions. Temperature dependencies of the electric conductivity of 60 samples in the system Ga₂S₃-GeS₂-MCl were measured. All of these glasses have cation conductivity. Activation energy of conductivity for all investigated systems is a linear function on the cubic root of the atomic fraction of cations. These results correspond to the simple model of cation conductivity.