The invention discloses an amine liquid purification control method and device. The control method comprises the following steps: purifying the amine liquid through an ion exchange column to reduce the content of heat-stable salt HSS in the amine liquid, judging whether the absorptive amount of the ion exchange column to HSS is saturated or not, if so, recovering the amine liquid from the ion exchange column through deionized water, and cleaning HSS in the ion exchange column through the ion exchange column by using alkali liquor. The control method has the advantages of saving the energy resources, reducing the cost, improving the desulphurization efficiency of the device, greatly decreasing the device corrosion, prolonging the service life of the device, decreasing the impact on a sewage treatment system and avoiding the harm to the environment and the human body.