Reforming of carbon dioxide by methane was studied over Ni(10wt%)/TiO₂ catalyst in a fixed bed flow reactor at atmospheric condition. The optimal conditions of calcination temperature, reduction temperature, and :he au:ount of Ni loading based on the catalytic activity are 550℃, 550℃, and 10wt%, respectively. Most of NiO phase peaks before reduction turn into Ni₂₊ions after reduction. The effect of promoters on the catalytic activity was investigated as follows Ca> Mg> K> Na. Adding alkali metal salts and alkali earth metals oxide to the catalyst could be inferred to increase the yield of carbon monoxide, and to remove carbon on catalyst surface resulted from reverse Boudouard reaction. The reverse water gas shift reaction also occurred depending upon the reaction condition.