Gypsum-based marble table board pressing device and pressing process

The gypsum-based marble table top pressing device comprises a first driving part, a pressing plate assembly and a mold assembly, the output end of the first driving part is fixedly connected with the pressing plate assembly, and the first driving part is used for driving the pressing plate assembly to press phosphogypsum; the mold assembly comprises a fixed mold and a movable mold, when the movable mold is sleeved with the fixed mold, the movable mold is used for containing phosphogypsum and pressing the phosphogypsum under the action of the pressing plate assembly, and when the movable mold is separated from the fixed mold, the movable mold is used for containing the phosphogypsum and pressing the phosphogypsum under the action of the pressing plate assembly. And the movable mold can be detached to demold and take out the gypsum-based marble table board. The mold assembly is divided into the fixed mold and the movable mold, so that the effects that the mold is convenient to mount and dismount and can be flex