An embossing seal comprising a base having a front end and a mounting recess formed in the front end of the base, a die assembly mounted in the mounting recess of the base, and a pressing handle pivotally coupled to the base and having a pivot portion pivotally connected to the base and a pushing portion formed adjacent to the pivot portion, and the embossing seal further comprising: a driven shaft assembly movably mounted in the base and abutting against the die assembly, and the driven shaft assembly including a lower shaft unit mounted in the base, being able to move up and down relative to the base, having a lower end abutting against the die assembly, and including a main shaft being tubular; at least one oil retaining groove formed in and around an outer surface of the main shaft; and a necked portion protruding from and formed around an inner surface of the main shaft and having a limit surface facing toward an upper end of the main shaft; and a first stop surface facing toward a lower end of the main shaft;an upper shaft unit coupled to the lower shaft unit being able to move up and down relative to the lower shaft unit, and including a connecting panel having a through hole formed through the connecting panel; an upper shaft mounted to the connecting panel, mounted through the through hole of the connecting panel, and having; a lower end protruding into the main shaft; and a lower end surface facing the limit surface; and a fastener mounted through the necked portion, fastened to the upper shaft, and having a second stop surface, and the second stop surface selectively abutting against the first stop surface; and a cushion member mounted to the upper shaft unit and having two ends respectively abutting against the lower shaft unit and the upper shaft unit; a restoring member mounted in the base and having two ends respectively abutting against the base and the upper shaft unit; and the pressing handle abuts against the upper shaft unit. a driven shaft assembly movably mounted in the base and abutting against the die assembly, and the driven shaft assembly including a lower shaft unit mounted in the base, being able to move up and down relative to the base, having a lower end abutting against the die assembly, and including a main shaft being tubular; at least one oil retaining groove formed in and around an outer surface of the main shaft; and a necked portion protruding from and formed around an inner surface of the main shaft and having a limit surface facing toward an upper end of the main shaft; and a first stop surface facing toward a lower end of the main shaft;an upper shaft unit coupled to the lower shaft unit being able to move up and down relative to the lower shaft unit, and including a connecting panel having a through hole formed through the connecting panel; an upper shaft mounted to the connecting panel, mounted through the through hole of the connecting panel, and having; a lower end protruding into the main shaft; and a lower end surface facing the limit surface; and a fastener mounted through the necked portion, fastened to the upper shaft, and having a second stop surface, and the second stop surface selectively abutting against the first stop surface; and a cushion member mounted to the upper shaft unit and having two ends respectively abutting against the lower shaft unit and the upper shaft unit; a restoring member mounted in the base and having two ends respectively abutting against the base and the upper shaft unit; and the pressing handle abuts against the upper shaft unit.