A temperature-self-compensating fiber-integrated bragg grating strain transducer comprises a fiber bragg grating transducer body composed of two bare fiber bragg gratings with the same model but different wave bands, an elastic sheet composed of high-elasticity metal thin sheets, clamping pieces, bases, a Z-shaped movable piece composed of L-shaped steel plates and a metal frame. The metal frame is provided with a frame shaft hole and a frame connecting shaft, and a connecting shaft of the Z-shaped movable piece penetrates through the frame shaft hole to be fixedly connected with the base II through the clamping piece II and can relatively move in the frame shaft hole. One end of the elastic sheet is fixedly connected with the L-shaped plates of the Z-shaped movable piece, and the other end of the elastic sheet is fixed on the metal frame. The frame connecting shaft is fixedly connected with the base I through the clamping piece I. A cantilever beam stress structure is formed by the frame, the Z-shaped movable piece, the elastic sheet, the bases and the clamping pieces. Under the working state, the two bases are fixed on the surface of a component to be tested in a bolting or welding mode, and when the component to be tested is strained, the bases and the Z-shaped movable piece are driven to drive the elastic sheet to deform, and then the fiber bragg gratings deform.