Abstract: Removal technology of strontium and iron from crude barium chloride raw material were studied.Optimization of process conditions of strontium and iron removal were discussed.When crude barium chloride mixing with deionized water as mass ratio of liquid-solid of 0.25∶1 and stiring and dissolving the mixture at 60 ℃ for 40&nbsp; min,impurities of stromtium and calcuim can be removed and mass fraction of strontium in the obatined solid barium chloride was below 1×10<SUP>-4</SUP>.Then add oxydol （H<SUB>2</SUB>O<SUB>2</SUB>）at proportion of 100 g raw materials per 8 mL H<SUB>2</SUB>O<SUB>2</SUB>,and add active carbon and small quantity of sodium hydroxide.Finally,iron could be get rid of when pH was controlled below 10.Mass fraction of iron in barium hydroxide product was less than 1×10<SUP>-5</SUP> when using the iron-removed barium chaloride as raw material.Therefore,purified barium chloride by this method can be used to produce purity barium hydroxide. 