Abstarct: Gallium is a mextal with extensive application in high-tech industries such as opticts, electronics and laser. Bayer liquor obtained during alumina production from bauxite is the most important source of gallium. It was estimated that about 90% of world primary gallium is produced from the Bayer liquor. In this study, Ga was extracted by solvent extraction using kelex 100 and the effect of different parameters such as Kelex100 concentration, modifier type and percent, diluent type and also extraction time on the extraction efficiency of gallium was investigated and optimiszed. Furthermore, obtaining the pure gallium compounds from the final exrtraction solution was investigated for electrolysis process of gallium.