The summer monsoon affecting China includes the southeast monsoon from the Pacific Ocean, the southwest monsoon from the Indian Ocean, the southwest monsoon and the southeast monsoon.

Summer monsoon refers to the prevailing wind blowing from the ocean to the mainland in summer in monsoon region. In summer, the Asian continent is controlled by a huge thermal depression, and the ocean is in a state of high pressure, and the airflow blows from the high pressure area to the low pressure area. The South China Sea summer monsoon is an important part of the East Asian monsoon. Its outbreak marks the transition from winter circulation to summer circulation, and also indicates the arrival of East Asian summer monsoon and the beginning of rainy season in China. Its activities will have an important impact not only on the Asian monsoon system, but also on the circulation and weather in the northern hemisphere. The onset date of the South China Sea summer monsoon has become one of the key contents of the annual national/South China Climate Trend Conference. With the development of economy and agriculture, the South China Sea summer monsoon has been paid more and more attention by countries all over the world, especially the countries and regions around the South China Sea.