Abstract: Graphene is considered to be a promising gas barrier filler, complete monolayer graphene blocks the vast majority of small gaseous molecules through its surface, so graphene is widely used as a filler to improve the gas density of the polymer. The research progress of graphene and its derivatives enhancing polymer airtightness in recent years is reviewed. The characteristics of graphene and its barrier mechanism in polymer matrix are introduced, the main factors affecting the barrier of layered graphene/polymer nanocomposite are discussed. The methods of enhancement of graphene and the derivatives of different polymer gas density are analyzed. Finally, the research of graphene and its derivatives enhancing polymer airtightness is summarized and the future development direction is prospected.