The invention provides a gradual entering type spacing-adjustable ceramic plate pressing mechanism. Before plate pressing is conducted through the device, an operator needs to adjust horizontal adjusting hand wheels according to the width of a pressing plate so as to change the distance between a fixed guide rail and a movable guide rail and then adjusts a supporting plate to the appropriate height through vertical adjusting hand wheels according to the needed thickness, the operator pushes the pressing plate to the position between the fixed guide rail and the movable guide rail, a plate pressing motor is started to drive crankwheel rotation rods to act after a pug block is placed, crankwheels enable inclination rotating plates to rotate to be inclined through connecting frame rods, thenthe operator drags the pressing plate to do reciprocating motion, the inclination rotating plates change the angles in due time, plate pressing cylinders at different heights compress the pug block, and then plate pressing work is completed. The gradual entering type spacing-adjustable ceramic plate pressing mechanism is applied to the automatic plate pressing technology step in the domestic ceramic production process, and the defects that a traditional plate pressing device is complex in driving mechanism, low in efficiency, poor in plate pressing quality and low in automation degree are overcome.