Abstract: The isotopic dating of the quaternary samples is a usual geological problem that has not been satisfactorily resolved. In recent years, the quaternary geochronology and the dating methods are very fast developed with the advanced techniques which include mass spectrometric analysis, thermal ionization mass spectrometrer (TIMS), accelerator mass spectrometer(AMS) and the chemical separation of samples. The K-Ar and Ar-Ar dating,14C,Uranium series,FT, TL and ESR dating etc. can provide accurate time scales for study of the earth evolution,the changes of paleoclimatic and paleoenvironment since the quaternary time. Cosmogenic nuclides, such as 10Be,26Al,36Cl and 39Ar can be used to date the erosion of earth surface,glaciation and deglaciation,groundwater ages, the formation and exposure ages of geological bodies. Sensitiuity,accuracy and velocity of the measurement are greatly enhanced. These dating metnods have made great progress in the quaternary geochronology and isotopic geoscience. Their presence and potential application will be of major importance to the quaternary geology and the whole earth-science. Their characteristic,surperiority and limitation are discussed in this paper.