Abstract: The study established the methods for total cyanide determination in water containing sulfide and thiocyanate.EDTA-disodium and phosphoric acid are used as predistillation reagent.Silver nitrate is used as masking agent.With the help of twice distillation,interference was eliminated.The distilled solution was absorbed with NaOH solution.For the samples with high total cyanide content in the absorbed solution,silver nitrite titration is used for determination.While for the low content samples,isonicotinic acid-pyrazolone spectrophotometry is used.The RSD of the determination results is 0.19 %-5.21 %.The recovery rate of reference material is 92.7 %-99.9 %.The precision and accuracy are good.The method is easy to operate,rapid and low-cost,fit for batch test of samples.