Abstract: Provided is a rotary stamp capable of obtaining an imprint having a uniform density. The rotary stamp includes a sheathing (300) covering an outer side of an upper portion of a leg frame body (1), with a spring (5) interposed therebetween, and being movable upward and downward; and a signet body (2) being movable together with the sheathing (300) and being movable upward and downward with respect to the leg frame body (1). When the sheathing (300) is caused to move downward by exerting a pressing force on the sheathing (300), a stamping face of the signet body (2) makes a half turn and advances to a position where the stamping face is brought into contact with a sealing position.