The invention discloses a method for preparing 4-hydroxyl-6-methyltetrahydro-2-pyrone, which includes the following steps: triacetic acid lactone material and alcohol compound with hydrogen donors are mixed and added into a closed high-pressure reaction kettle, nitrogen pressure is 1MPa to 12MPa, reaction temperature is room temperature to 150 DEG C, hydrogen transfer reaction is carried out under the existence of catalyst for 0.5 to 48 hours, so that 4-hydroxyl-6-methyltetrahydro-2-pyrone is obtained, and the catalyst is non-noble metal nanoparticles. The method does not use noble metal, so the cost is low; the catalyst is easy to separate and can be repetitively used; the reaction system is simple; and the method is easy to industrialize.