The invention relates to the technical field of ceramic casing processing, in particular to an automatic molding system for casing. It includes a vibrating feeding device, a casing pushing device, a casing guiding and positioning device, and a clamp installation device connected in sequence along the casing conveying direction. The vibrating feeding device is configured to output the material output track of the material queue, the casing pushing device is configured to push the material pushing track of the casing along the casing transmission direction, and the casing guiding and positioning device is configured to The guide and positioning groove for radial positioning of the sleeve, and the clamp installation device install the clamp for accommodating the sleeve. Automatically organize the scattered ceramic sleeves into queues, unify their opening directions, and install them into the fixture. The tedious manual operation process is saved, the burden on workers is reduced, and the efficiency is improved.