Atomic fluorescence spectrometry（AFS） has become an important means for detection of metal and metalloid.Sample introduction technique for AFS is directly related to the type of incorporated atomizer.In this paper，according to the difference of sample introduction principles，four kinds of sample introduction techniques of AFS，including direct injection，spray introduction，chemical vapor generation（CVG） and electrothermal vaporization（ETV），were reviewed respectively.The research development，principle，merit and demerit of each kind were presented in detail，particularly that for CVG and ETV.The perspective of sample introduction techniques for AFS in future was also put forword.Totally，75 references were cited.