The utility model discloses a riveting device for an optical fiber strain sensor. The punching device comprises a bottom plate, a first limiting plate, a second limiting plate, guide columns, a punching plate, a telescopic power mechanism and a first workbench. The first limiting plate and the second limiting plate are arranged at the two ends of the bottom plate. one end of the guide column is connected with the first limiting plate; the other end of the connecting rod is connected with the second limiting plate; the stamping plate is arranged on the guide columns in a sliding and sleeving mode. A stamping head is arranged on the side, facing the first limiting plate, of the stamping plate. The telescopic power mechanism is arranged between the stamping plate and the second limiting plate, the telescopic power mechanism drives the stamping plate to do linear reciprocating motion along the guide columns through telescopic motion of the telescopic power mechanism, and the first workbench abuts against the side, facing the stamping head, of the first limiting plate. According to the utility model, structural parts can be riveted conveniently, the use is safe, the labor intensity is greatly reduced, the production efficiency is improved, and the quality of the optical fiber strain sensor is ensured.