The invention provides a method for synthesizing 1,2,6,7-tetrahydro-8H-indeno[5,4-b]furan-8-ketone. The method comprises the following steps: a, performing the Claisen rearrangement reaction of a compound III in an appropriate solvent to generate a compound IV; b. supplying ozone to the compound IV at a low temperature to perform reaction, adding sodium borohydride or potassium borohydride to perform reduction reaction and obtaining a compound V; c, allowing the compound V to react with methanesulfonyl chloride or p-toluenesulfonyl chloride in pyridine so as to obtain a compound VI and a compound VII; and d, dissolving the compound VI and/or the compound VII in an appropriate reaction solvent, adding appropriate organic base, raising temperature to perform reaction, cooling the obtained product, adding diluted hydrochloric acid for washing, evaporating the solvent and obtaining a compound I, namely the 1,2,6,7-tetrahydro-8H-indeno[5,4-b]furan-8-ketone. The method has the advantages ofbrief synthesis route, simple operation, low cost, high yield and convenience for industrial production.