Based on the characteristics of high temperature resistance and well temperature stability of hollow core photonic crystal fiber (HCPCF), high temperature strain response of the micro Fabry-Perot etalon(HCPCF F-P) fabricated by splicing a section of hollow core photonic crystal fiber in between two single-mode fibers is reported. Experimental results show that the HCPCF F-P has good temperature stability in the range of 100 ℃ to 700 ℃, and the strain sensitivity and linearity of HCPCF F-P is ～5.94 nm/με and ～0.9997 at 600 ℃,respectively. The max cross-influence of temperature on the strain is just about 1.5%, and the measuring accuracy is about 0.08% FS. Furthermore, the theoretical and experimental results show that the temperature sensitivity and the influence of temperature on strain of the HCPCF F-P is low, while the sensitivity, linearity and repeatability of strain of the HCPCF F-P is very high. The strain sensor has large strain measure range and no hysteresis.