Method for producing low-medium-carbon alcohol

The invention discloses a method for hydrogenated preparation of corresponding alcohol by using ketone as a raw material. A method for producing low-medium-carbon alcohol comprises the following steps that: a hydrogenation catalyst is activated by special process conditions; and under the optimized process conditions, the raw material and hydrogen are contacted with the activated hydrogenation catalyst to produce the corresponding alcohol by hydrogenation. Under the optimized catalyst activation and reaction process conditions, both the reaction conversion rate and the product selectivity are over 99%, and the subsequent separation process is conveniently simplified.