Since graphene was used successfully to generate ultrashort laser pulse in 2009,many mode-locked lasers have emerged with various cavity,wavelength and pulse characteristics.Mode-lockers based on graphene′ saturable absorption are research hot spot due to their outstanding properties including good stability,wide operating bandwidth,short recovery time,low insertion loss and so on.In this paper,the research progress of graphene passively mode-locked fiber lasers are reviewed,and the future development of this filed is discussed.