Abstract: The syntheses of sucrose fatty acid ester catalyzed by rare earth solid super acid under microwave irradiation is investigated, including the influences of microwave power, radiation time, catalyst and emulsifier on the reaction. The results shows that the catalytic activity of Gd³⁺-SO₄^2-/ZrO₂、Y³⁺-SO₄^2-/ZrO₂ is better than K₂CO₃ when microwave power is 390W and radiation time is 20min, and the reaction time of synthesis is shortened from 4~8h in traditional heating menthol to 20min under microwave irradiation.