The invention relates to a normal-temperature phosphogypsum cleaning compound. The normal-temperature phosphogypsum cleaning compound is mainly prepared from organic carboxylic acids, glycine and a derivative thereof, a dispersant and water in a certain ratio. The raw materials of the cleaning compound are free of phosphorus and are environment friendly. When the cleaning compound is used at normal temperature, the removal rate of scale is 100%, and the cleaning compound has a corrosion rate of less than 0.1 g/m<2>.h in cleaning of pipelines made of carbon steel and the like and is free of corrosion to pipelines made of a PP material. The cleaning compound has a wide application scope and is also applicable to both cleaning of phosphogypsum and cleaning of complex sulfate scale simultaneously containing calcium carbonate, calcium silicate and the like.