Filtering technique. extended empirical orthogonal function (EEOF).spectrumand correlation analyses have been employed to study the relationship between Arctic ice cover(AIC)and monthly mean temperature and precipitation in China. The curve of power spectrum density shows that not only a semiannual and an annual oscillation but a quasibiennial oscillation can be found in AIC area index anomaly. especially in June, September and November.One can also see that there exists a close relation between the global ENSO events andAIC area low-frequency filtering curve. Analysis based on EEOF of AIC and the monthlymean temperature over China exhibits a good matching which is even better in the later period.The correlation analysis indicates that the variation of AIC area has some influence on the temperature and precipitation in subsequent months over China. In addition, it experiences aquasi-biennial low-frequency oscillation and displays some kind of propagation.