The invention discloses a device for indexing and resetting a paper-based friction plate during attaching, which is used for solving the technical problem that the paper-based friction plate is needed to be positioned, indexed and reset simultaneously in the conventional substrate attaching process. The technical scheme is that the device comprises an indexing mechanism, a fixture part and a resetting mechanism, wherein the indexing mechanism consists of a base (2), a worm shaft (3), a worm wheel (4), an upper seat (5), an indexing main shaft (12), a coupling (18) and a servo motor (19); the fixture part consists of a positioning seat (7), a positioning ring (8), guide rail blocks (13), positioning blocks (14), elastic bodies (15), movable blocks (16), a cylinder fixing plate (17), a resetting spring (20), a triangular cam (21) and a swing cylinder (22); and the resetting mechanism consists of a resetting cylinder (1), bearing covers (6), the positioning seat (7), a mandrel (9), bearing washers (10) and angular contact ball bearings (11). Positioning, indexing and resetting are integrated, so that the requirement of positioning, indexing and resetting the paper-based friction plate during attaching is met.