To provide a phosphorescent rubber plate reducing manufacturing cost by reducing content of a phosphorescent material, maintaining light emitting property high, and having excellent durability to make it possible to be used for a long time period, a mat using the phosphorescent rubber plate, and a manufacturing method of the phosphorescent rubber plate.

The phosphorescent rubber plate 1 has an uncrosslinked rubber plate 2 comprising natural rubber or synthetic rubber as a main ingredient before crosslinking compression forming and a phosphorescent sheet 3 having a phosphorescent function in a predetermined shape, and the phosphorescent sheet 3 arrange on the rubber plate 2 is integrated with the rubber plate 2 by compression during the crosslinking compression forming of the rubber plate 2.