Surface mount type fiber bragg grating strain gauge

The utility model concretely discloses a surface mount type fiber bragg grating strain gauge, comprising a movable support, a fixed support, a housing, lead-out holes, a pulling element, a pressing element, a transmission fiber and a transmission rod, the same side of the housing is provided with two lead-out holes, the fixed support is fixedly connected with the housing, the movable support is moveably connected with the housing, the transmission rod successively goes through a first side wall of the housing, the movable support, the fixed support, and a second side wall of the housing, the transmission rod comprises an inner pipe and an outer pipe, a tail end of the inner pipe is connected with the pressing element, a tail end of the outer pipe is connected with the pulling element, the same side of the outer pipe is provided with a directional element I, a directional element II, and a fixed range element I, the same side of the inner pipe is connected with a directional element III, a directional element IV, and a fixed range element II; the transmission fiber is led in from one lead-out hole of the housing, successively goes through the movable support, the fixed support, and the fixed support, and is led out from the other lead-out hole. The transmission fiber is provided with measuring gratings.