Erbium-doped fiber amplifier (EDFA) is considered to be the main device for ultrashort pulse amplification owing to its high gain (40~50 dB),broad bandwidth (~50 nm),and high pulse-saturation energy (~1 μJ).In this paper,ultrashort pulse amplification techniques based on EDFA are reviewed and discussed,with the emphasis on how to reduce the fiber nonlinear effects on the amplification of ultrashort pulse.The latest achievements in this field are also introduced.