Abstract: It has been proved that Malti scale (Multi resolution) analysis of wavelet transforms in an important method to study the changing cycles of the Quaternary period climate on different time scales.In the west edge of the loess plateau,the wavelet analysis of magnetic capbability climate substitutute curve of HongZuiShi section shows that 1) there are about 56 climatic fluctuations of hundred-year-scales,15 climatic cycles of thousand-year-scale and 3 glacial staircases-interglacial staircase periods during the last glacial maximumin (30-10KaBP ) ; 2) in the thousand-year-scale climatic curve decomposed with wavelet,warm events are more outstanding, peaks（Denekamp,?(),(BΦL)）; 3) younger Dryas Only has reflection in the hundred-year-scales climatic curve, it is not evident in the curve of long period; 4) in the hundred-year-scales climatic curve, the last glacial maximum fluctuation as frequuently and 18-28KaBP was the stage in which the frequency fluctuation was the largest.But the climatic fluctuation frequency tends to be regular with the increase of the period scale.

Key words: Malti scale (Multi resolution) analysis, climatic period decomposition, hongzuisi section, avelet transforms, Malti scale (Multi resolution) analysis, climatic period decomposition, hongzuisi section