The invention discloses a method for synthesizing methyleugenol. The method is characterized by comprising the following steps: reacting 4-halo-benzenediol and methyl to synthesize 4-halo-benzenediolmethyl ether; reacting the 4-halo-benzenediol methyl ether and magnesium to produce magnesium halide 4-benzenediol methyl ether; and reacting the magnesium halide 4-benzenediol methyl ether and 3-halo-1-propyl olefin to produce methyleugenol. According to the method for synthesizing methyleugenol, provided by the invention, the methylation reaction is carried out first, and a Grignard reagent and3-halo-1-propyl olefin react to obtain the methyleugenol. The overall yield reaches 80% or higher, the purification is simple, and non-toxic dimethyl carbonate or alkyl halide is used in the process flow, so that the process is small in human toxic and side effects, and environmental pollution is reduced.