Disclosed is a method for removing SO x in a gas by using an ethylene glycol complex solution. Ethylene glycol and/or polyethylene glycol is mixed with an organic acid or organic acid salt that does not contain nitrogen atoms in molecules, to form the ethylene glycol complex solution, and the ethylene glycol complex solution is made to be in contact with a gas containing Sox, to absorb SO x in the gas, wherein x is equal to 2 and/or 3. The ethylene glycol complex solution in which SO x is absorbed is regenerated by using one or more of a heating method, a vacuum method, a gas stripping method, an ultrasonic method, a microwave method and a radiation method, byproducts of sulfur dioxide and sulfur trioxide are released, and the regenerated ethylene glycol complex solution is recycled. The method can be applied to desulfurization of flue gases, incineration gases, coke furnace gases, synthetic waste gases in a dyestuff plant, sewage disposal gases in a chemical fiber factory, and other industrial raw material gases or waste gases containing SO x