Abstract: In the report, the best path data set of CMA-STI tropical cyclones (TC) from 1949 to 2015 were used to analyze the climatic characteristics which affect the frequency, intensity, source, and path of the South China Sea and some other regions。The results indicated that annual average frequency of TC entering the South China Sea and its northern, southern regions were 11, 7.5, and 3, respectively. with single peak appeared in September, August and November; the annual average frequency of TC entering the central South China Sea was 6.1, with double peak appeared in October and July; among the TC affecting the South China Sea, 52% TC were from the Northwest Pacific, and 48% were locally generated; among the TC affecting the northern, central and southern region of the South China Sea, the ratio of TC from the Northwest Pacific was 52%, 52%, and 54%, respectively, and TC intensity from the Northwest Pacific was significantly stronger than those from the South China Sea. In the different regions of the South China Sea, the intensity of TC affecting the northern region were the strongest, while those affecting the southern region were the weakest. TC affecting the South China Sea mainly ranged from the South China Sea (> 5°N), and east ocean of Philippine Islands till 150°E, 6°～16°N of the Northwest Pacific; the latitudes of the source regions of TC affecting the southern and northern regions of the South China Sea in order to the south, while the longitudes of it in order to the western. The path directions of TC affecting the South China Sea and its northern, central and southern region were concentrated in WSW-NW, W-NW, W-NW, and WSW-WNW, respectively, with total frequency over 55%, the leading directions of all regions were WNW with frequency over 24%, except that the south was W (23.9%). From 1949 to 2015, the TC frequency of the South China Sea and its northern region significantly decreased (-0.6 and -0.5 per decade), which reach 0.6/10a和0.5/10a, respectively, the TC frequency of the South China Sea and its central region was faint decreased, while no significant change trends in the central and the southern region; the TC intensity of the South China Sea and its northern region and central regions showed a significant increasing trend, while the trend was not significant in southern region.