The invention discloses a synthesis method of diphenylcyclohexylcarbinol. The synthesis method sequentially comprises the following steps: adding higher fatty acid or higher fatty acid salt into an organic solvent under the protection of inert gas, adding sodium or granular sodium, dropwise adding halogenated benzene to react with a mixed solution of the organic solvent, then dropwise adding methyl cyclohexanecarboxylate to react, standing the obtained reaction liquid, filtering, and adding a hydrochloric acid solution or an ammonium chloride aqueous solution into the filtrate to carry out a hydrolysis reaction; statically separating the obtained reaction liquid, evaporating the organic solvent from an organic phase, performing rectification under vacuum to obtain a colorless transparent oily substance, and curing at room temperature to obtain the diphenylcyclohexylcarbinol. The method for preparing the diphenylcyclohexylcarbinol has the technical advantages of high efficiency, economy, greenness and suitability for industrialized production requirements and the like.