Aiming to solve the problems, such as incomplete deodorization and low recovering rate, existing in the prior process of deodorizing garlic oil, the invention provides a novel process for deodorizing garlic oil. The process comprises the following steps: (1) grinding garlic materials into garlic pulp, and adding water to obtain a pulp liquid; (2) distilling the pulp liquid at 120 to 135 DEG C andobtaining a first deodorized distillate; (3) and conducting the oil-water separation and the electromagnetic wave irradiation on the first deodorized distillate so as to obtain a second deodorized distillate. Furthermore, the frequency of electromagnetic wave is 2400-2500 MHz, and the electromagnetic wave irradiation can be conducted before the oil-water separation or after the oil-water separation. The novel process provided by the invention for deodorizing garlic oil is a physical method and has the advantages of good deodorizing effect, convenient operation, high efficiency, suitability for the industrial large-scale production and no foreign chemical substance residues.