Abstract: A preliminary estimate about brine reserves in deep subsidence formation of Jiangling is over 1×109 m³，the average bromine content in the brine is 156 mg/L，and the total reserves of bromide ion is about 15 600 t.So it has huge development and utilization value.How to extract bromine from the brine in Jiangling deep subsidence formation was studied.Air blowing method was employed to extract bromine and the influences of oxidation potential，air-blowing speed， blowing time，and absorber concentration etc.on the bromine-blowing effect were investigated.The optimum conditions were obtained as follows：the oxidation potential was 960~980 mV，air-blowing velocity was 1 m³/h，blowing time was 15 min，and mass fraction of absorber Na₂SO₃  was 25%.The method has simple equipment，is easy to operate，and easy to realize mechanization and automation，providing a necessary reference for the industrial production of bromine from deep brine.

Key words: deep brine, bromine extraction, air blowing method