The factors causing inhomogeneities and the techniques of identifying inhomogeneities and adjusting climate series developed by the native and foreign climatologists are discussed. The progress of the homogeneity study of the national or regional climate data in respective countries are summarized. A summary of the relocations of the stations and the changes of the instruments in China during 1951-2001 is given.The conclusions on the homogeneity study of Chinese climate data are reviewed, and some discussions and suggestions on homogeneity study of meteorological data are presented.