Miniature inertial sensors are required in modern military.Mature technologies inertial navigation system includes mechanic gyros
ring laser gyros(RLGs)
fiber-optic gyros(FOGs) and hemispherical resonant gyros(HRGs).Now some MEMS gyros and accelerometers have been used for military.Interference fiber-optic gyros(IFOGs) using photonic crystal(PC)(PC—IFOGs) is researched.Technical progress of MEMS/ integrated optical(IO) waveguide inertial sensors are described emphatically.Prospect of miniature gyros and accelerometers technologies and functions in precise strike for military in the future are analyzed.