The effects of bola-form electrolytes on the dyeing behaviors in Orange II/wool dyeing system were studied. For these purposes, four different bola-form electrolytes were synthesized by the reactions of pyridine and 1,4-dibromobutane, 1,6-dibromohexane, 1,8-dibromooctane or 1,10-dibromodecane, respectively. It was found that wool fabrics treated by electrolytes prior to dyeing were dyed in lower temperature even in the medium of distilled water. A dyeing time of 10-20 mins at 90 $^{circ}$C in the medium of distilled water was enough when the wool fabric was pretreated by the electrolytes. The differences in the number of the carbon atoms present in bola-form electrolytes did not affect on the K/S values of dyeings. The presence of the bola-form electrolytes in dyebath did not show significant changes in the dyeing behavior because of its lower concentrations in this study.