Aiming at measuring the total temperature of high-speed airflow of the aero-engine, a novel total temperature probe combined with the stagnation tube and fiber grating is proposed. Due to its small size and single-end sensing structure, the fiber grating is a competitive alternative for temperature sensing. A numerical simulation method is employed to design the aerodynamic structure of probe and analyze the influence of the structure parameters on the measurement results. Based on this, the fiber grating total temperature probe is fabricated, and the total temperature measurement system is established. And the working performance of the probe is tested under the subsonic wind tunnel. Results show that the probe has good stagnation effectiveness and stability with Mach numbers between 0. 3 and 0. 8. When the Mach number is larger than 0. 5, the recovery factor is above 0. 8. It is as high as 0. 99 when the Mach number is 0. 8. The diameter of the miniature fiber grating total temperature probe is 0. 8 mm, and the overall size is much smaller than that of a thermocouple probe. It can effectively reduce the interference to the flow field while satisfying the precise measurement of the total temperature.