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The statistical characteristics of Tropical Cyclones (TCs) affecting the East China Sea (117°E to 131°E, 22°N to 33°N) are analyzed by means of the TC data from 1961 to 2005. The results indicate that there is obvious annual variation in TCs over East China Sea with 8.6 TCs per year averagely; the numbers of TCs have good correlation with El Nino phenomenon, during which the numbers of TCs are less; TCs appear mostly from June to September, and the durations of TCs are usually less than 5 days; TCs form mostly in the Pacific area east of Philippines and the sea area around Guam, mostly come from south or east with three moving paths: northwest, northeast, and directionturning.