The temperature testing of bridge wire radiation has many difficult technical problems, for instance, the small size of detected target, the small volume of infrared radiation, the large signal loss in distant transportation, etc. A two-wavelength fiber optic temperature measuring system was developed. The principle of the thermal radiation about the Electric initiating Explosive Device (EED) is analyzed and two-wavelength mathematics model is derived. Effective optical fiber coupling combined with methods for developing SNR in system are adopted. The InSb (response range is 0.8～3 μm) and HgCdTe (response range is 3～5 μm) are chosen as the two-wavelength detector. Inductive current and temperature measurement are realized using uncontacted method to EED target. The test device has strong electromagnetic shielding ability, and is free of environmental temperature effect. The measurement error caused by the temperature drift is avoided. The measurement precision is 1 K. It becomes the base of achieving the temperature measurement further in extremely weak thermal radiation of EED like bridge wire.