The invention provides a method for synthesizing dimethylcyclopropanecarboxylate. The method comprises the following steps of: dissolving 3,3-dimethyl-4,6,6,6-methyl tetrachlorocaproate in one part of a nonpolar organic solvent to obtain solution A; mixing organic alkali and the other part of the nonpolar organic solvent to form solution B; mixing the solution A and the solution B in a dripping mode to ensure that a molar ratio of the 3,3-dimethyl-4,6,6,6-methyl tetrachlorocaproate to the organic alkali is 1:(2.0-3.3) and ensure that a mass ratio of the 3,3-dimethyl-4,6,6,6-methyl tetrachlorocaproate to the whole nonpolar organic solvent is 1:(3-10); and reacting at the temperature of between 70 and 120 DEG C to remove HCl and adjusting a ratio of ethanol generated in a reaction system tothe nonpolar organic solvent simultaneously to adjust a cis-trans ratio of the generated dimethylcyclopropanecarboxylate so as to obtain the dimethylcyclopropanecarboxylate with the cis-trans ratio of 20:80-80:20. The method provided by the invention can further improve the yield and simplify the process so as to better facilitate industrial production.