In order to reduce the coke formation over a conventional Ni/γ-Al 2 O 4 catalyst and increase the activity at low temperature, we used the impregnation approach to synthesize MgO (30.0wt.%)/Zeolite Y catalysts loaded with bimetallic Ni(10.0wt.%)/Ga(10.0–30.0wt.%) and study the steam-reforming reactions of ethanol. The Ga-loaded catalyst impregnated between the Ni and Mg components exhibits significantly higher reforming reactivity compared to the conventional Ni/Mg/Zeolite Y catalyst. The main products from steam reforming over the Ni/Ga/Mg/Zeolite Y catalyst are only H 2 and CH 4 at above 550°C, and the catalytic performances differ according to the amount of Ga. The H 2 production and ethanol conversion are maximized at 87% and 100%, respectively, over Ni(10)/Ga(30)/Mg(30)/Zeolite Y at 700°C for 1h at CH 3 CH 2 OH:H 2 O=1:3 and a gas hourly space velocity (GHSV) of 6740h −1 , and the high performance is maintained for up to 59h.