With the development of global satellite data and global meteorological observational data, monsoon researches have been well developed for the regions such as South China Sea, East Asia and others. The progress of regional monsoon research promoted the global knowledge of monsoon. The concept of "Global Monsoon" was proposed at the end of 20th century and become hot field in climate research at the beginning of the 21th century. Monsoon margin is closely correlated with global monsoon and the recent variation of East Asia monsoon is consistent with weakening tendency of global monsoon. The global monsoon appears as the worldwide atmosphere centers of action and monsoonal troughs, which can be generalized as the global monsoon system. In this article, according to the developing context of global monsoon research, the progresses of research on the global monsoon and monsoon margins are summarized systematically, and the future direction of monsoon research is discussed, which implies linking global atmospheric centers of action and global monsoon troughs, in other words, including the studies of the inter-decadal and centennial variability of monsoon in the sight of global monsoon system.