The astrometric research contents and the relationship with other subjects are described. The development of international astrometric researches in the most recent decade and the advanced subjects are given. The four advanced research subjects are: (1) realization of sub-milliarcsecond and even microarcsecond astrometry by astrometric satellites to be launched at the beginning of 21 century for requirement of astronomical research and deep sky survey; (2) establishment of infrared and even multi-wavelength reference frames; (3) extension of Hipparcos catalogue to faint stars and densification of the ICRF (International Celestial Reference Frame); (4) research work of cluster and Galactic structure, kinematics and dynamics by mean of astrometric parameters. The historic background and current basis of astrometric research in China, as well as the results obtained under the supporting of National Natural Science Foundation and other scientific organizations, are indicated.