The implementation process of sea launch is bound to be affected and restricted by the meteorological and marine environment，which directly affects the selection of sea launch windows and launch safety.In order to avoid the occurrence of major equipment damage，long-term window delay，and personnel safety accidents in the sea launch under complex weather conditions，in this paper，the distribution characteristics and change rules of the wave field，wind field，temperature field，and precipitation field in the Yellow Sea are analyzed，and the implementation phase and seasonal prevention trend of the sea launch are designed and analyzed based on the characteristics of seasonal changes.It provides reference experience for the implementation of sea launch under extreme weather conditions in different seasons.