Besides integrated resonator microoptical gyro based on silica planar lightwave circuit,many approaches to the microoptical gyro had been presented.This paper reviews the research and development of some approaches such as microoptical gyro based on coupled-resonator slow-Light waveguide,microoptical gyro based on the heavy metal fluoride glass ZBLAN,especially the microoptical gyro based on photonic crystal waveguide.Finally,it concludes the trend of the research of the microoptical gyroscope.