The invention relates to a recycling-type treatment method for desulfurization waste water. The recycling-type treatment method achieves multipurpose resource utilization in the softening process of desulfurization waste water through the following manners: homogenizing, pretreatment, separating calcium carbonate by feeding carbon dioxide in the flue gas, preparing magnesium hydroxide by adding ammonium hydroxide and preparing sodium hypochlorite by electrolysis. In the treatment process, all produced water can be returned to the front end to be used for subsequent treatment, so that zero discharge of the desulfurization waste water is achieved, water resource is saved and the treatment cost of the desulfurization waste water is reduced. The recycling-type treatment method maximizes the recycling of desulfurization waste water from power plants and flue gas from desulfurization towers and is of great guiding significance to the control of environmental pollution caused by power plants.