An analysis is made of the temporal frequency structure of monthly SSTA anomaly series in El Nino areas and monthly SOI anomaly series and monthly temperature anomaly series in Henan Province during the last 50 years using the Wavelet and Cross Wavelet Transform analysis techniques. The results show that there are multi scale periods in the anomaly series of SSTA and SOI as well as monthly temperature in Henan, which have various intensities, and the multi scale temperature variations in Henan Province are related to ENSO oscillation processes.