The present invention relates to a method for preparing a halogen-substituted benzyl alcohol from a halogen-substituted benzoic acid. When a halogen-substituted benzyl alcohol is prepared by using the method of the present invention, sodium borohydride and an inexpensive inorganic acid are used, and thus a benzyl alcohol can be prepared without using a specific reactor, thereby allowing a convenient preparation process, reducing industrial waste and allowing a high-purity benzyl alcohol to be prepared in a high yield. Therefore, the present invention facilitates mass production of a benzyl alcohol useful as a material for the synthesis of a herbicide and a clearing agent.
