The present invention pertains to the technical field of organic synthesis, providing a method to prepare allyl pentaerythritol ether compound mainly composed of allyl pentaerythritol ether. The preparation method includes the following steps: (1) pentaerythritol, alkali metal hydroxide, water and inert organic solvent are mixed according to a proper ratio, heated and agitated during reaction; (2) a proper dosage of phase-transfer catalyst is added into the reactant mixture, allyl halide is added slowly and supplementary phase-transfer catalyst is added when the allyl halide is added, and then the mixture is agitated to end the etherification reaction; (3) after reaction, the salt, the unreacted alkali-metal hydroxide and the phase-transfer catalyst in the system are removed by water, theseparated organic layer is distilled under normal pressure to remove the light component, and the desired product is achieved by vacuum distillation. The preparation method has the advantages of highyield of target products, low production cost, simple operation process, high security, and industrial production can be realized easily.