The invention relates to a novel synthesis route of 1S,4R-1-methyl-4-(1-methylvinyl)-2-cyclohexene-1-ol. According to the preparation method, limonene is taken as the raw material, 1S,4R-1-methyl-4-(1-methylvinyl)-2-cyclohexene-1-ol is synthesized after four steps: epoxidation reactions, addition reactions, oxidation reactions, and elimination reactions, and the yield is high. The provided 1S,4R-1-methyl-4-(1-methylvinyl)-2-cyclohexene-1-ol preparation method has the advantages of high yield, high chiral purity product, low cost, environmental friendliness, and easy operation, and is suitablefor industrialization.