Abstract: In order to study the main characteristics, formation mechanism and seasonal trends of spring climate in and around the South China Sea in the context of global warming, the main modes of spring sea temperature in and around the South China Sea in the context of the inter-generational context were analyzed, and their possible effects on spring climate in the Indian Ocean and the Pacific region during the same period were analyzed by the methods of empirical orthogonal function （EOF） decomposition, linear tendency estimation, sliding average and correlation analysis. The results show that in and around the South China Sea, the spring sea temperature anomaly presents two modes. The first mode is consistent warming in the region, and the second mode is cold in the north and warm in the south. The first modal sea temperature distribution is significantly affected by global warming. In the spring, there is an abnormal anti-cyclone circulation in the Philippine Sea area, and the western side of the subtropical high is strengthened. The consistent warming of the Indian Ocean basin in the previous winter indicate that the spring will be consistent warming in and around the South China Sea in the following spring. The second mode is obviously affected by the La Niña event in the pre-winter Pacific Ocean. The South China Sea temperature anomaly triggers a positive and negative wave distribution of the potential height field on the East Asian coast. The first （second） mode of precipitation in and around the South China Sea shows the distribution of waterlogging （drought） in the north and drought （waterlogging） in the south. The abnormal sea temperature in the South China Sea and its surrounding areas in spring will have a significant impact on the spring and summer climate in the India-Pacific coastal areas.

Key words: South China Sea, sea surface temperature, climate anomalies, spring, intergenerational change