Abstract: The application of nitrous oxide-ethane flame atomic absorption spectrometry to measure Tin in Wrought titanium alloy is stueide.This paper introduces the optimum measuring conditions for Tin and the potency,in which a fine liner range was presented.With a systematic consideration to interference factors.The method has the advantages of high sensitivity,less interference and good in selectivity and reappearance.The relative standard deviations are all less than 1.0%(n=8)in eight sample measures,and the standard adding recovery is in the range of 97.0%～100.0%(n=8).The practice shows that the method is fully suitable to measure Tin in Wrought titanium alloy.