Alignment film printing plate and printing device

The invention discloses an alignment film printing plate and a printing device, and relates to the technical field of liquid crystal display. The alignment film printing plate comprises a printing plate base body and at least one circular printing structure arranged on the printing plate base body, and the circular printing structure is used for storing alignment liquid. Wherein the outer edge of the circular printing structure is provided with a plurality of external expansion parts extending in the radial direction, and the multiple external expansion parts are arranged in the circumferential direction of the circular printing structure and used for storing alignment liquid. The alignment liquid storage amount of the circular printing structure in part of the edge area can be increased through the external expansion part, and then in the printing process, alignment liquid compensation is conducted on the edge, lacking of alignment liquid, of the circular printing structure, so that the formed alignment film