The utility model provides a pottery slip casting device, because slip casting portion is when being the slip casting of gypsum mould, the activity branch pipe stretches into gypsum mould bottom, the first lifter plate of lift drive unit drive slowly rises to drive activity branch pipe is slowly ascending, feasible activity branch pipe slip casting on one side rebound on one side, thus can avoid because of the mutual striking of mud entrained air in making mud at the in -process of slip casting, thus the gassing, because the in -process in slip casting, second cylinder drive third lifter plate descends, and first cylinder drive second lifter plate rises to make the gypsum mould carried by tray and compacting member, motor drive pivot rotation, the pivot drives the tray and rotates, thereby drives the rotation of gypsum mould, and it is even to make the interior mud of gypsum mould distribute, also can eliminate the bubble of the interior existence of mud simultaneously, consequently the utility model discloses a not only degree of automation is high for pottery slip casting device, production efficiency is high, and product quality is good moreover.