The invention relates to a method for increasing the hydrogen output through anaerobically digesting restaurant garbage and relates to a method for producing the hydrogen output through anaerobically digesting the restaurant garbage, which comprises following steps: firstly, weighing according to granular sludge: the restaurant garbage=1:0.2-0.4 part dry weight, adding the granular sludge and the restaurant garbage into a bottle, filling nitrogen or argon, sealing, statically culturing under the temperature of 4-20DEG C, finishing domestication when the pH value is lowered to 4.5-5.5, preserving, then, weighing according to the restaurant garbage: the granular sludge which is domesticated well=1 part dry weight:0.59-0.294part dry weight, then, arranging the restaurant garbage and the granular sludge into a container, evenly mixing, filling the nitrogen or the argon, then, sealing, concussing and stirring under the temperature of 40-50DEG C and the speed of 100-130r / min, starting anaerobic digestion, wherein the hydrogen yield is 65.63mL / g VS-94.04mL / g VS, fermenting firedamp with residual material after the hydrogen stops producing, and transforming the residual material into the firedamp. The method of the invention has the characteristics of low energy consumption, low cost and high heat value net output rate, and the hydrogen yield can reach 93mL / g restaurant garbage (dry weight) through using the method of the invention, which is increased by 20-30% compared with existing hydrogen yield.