The invention discloses a phosphogypsum slushing sun greenhouse, and belongs to the field of phosphogypsum calcination. The phosphogypsum slushing sun greenhouse comprises frameworks, a top greenhouseand side walls; the frameworks are arranged on the lower part of the top greenhouse; the top greenhouse is made of a transparent material; vents are formed in the top of the top greenhouse, and a rain-proof facility is arranged at the vents; the side walls are arranged on the lower part of the top greenhouse and located between the top greenhouse and the ground, the upper edges of the side wallsare in contact with the top greenhouse, the lower part of the side walls are near the ground, and vertical pillars located on two side edges of the top greenhouse are fixedly connected with the middlepart of the side walls; a plurality of holes of different sizes are formed in the side walls and distributed on the whole side walls; the side walls are formed by splicing bent boards; and the phosphogypsum slushing sun greenhouse has the characteristic that large quantity of dust are prevented from generating in the sun greenhouse under the premise that the greenhouse has the function of using sun and natural wind for removing moisture contented by phosphogypsum.