Abstract: Analyses of seasonal anomalies of sea-surface temperatures for the oceans across the globe have reveled four major features of variation over the past hundred year period. First,the period 1860 through 1930 was marked by almost monotonous negative anomalies of SST,with the maximm temperature drop (-0.4℃) taking place in 1900-1910. Second,SST rose during the period from the 1910's to 1960's and the amplitude of temperature was was g6nerally larger in the 1940's than in the 1960's. Third,the second significant fall in SST in this century occurred just at 1970's with weaker intensity and shorter duration than the first fall. Up till now,the global SST has been generally in a stage of Persistent rise. FOurth,in a global rang6,the SST for all of the oceans performed perfeCt simultaneity at stales of dozens of years.