An emulsion liquid membrane process without mobile carrier was developed to separate aniline from aqueous solution. The effect of some factors on the transport of aniline was researched in the membrane process. These factors are the concentration of hydrochloric acid in internal aqueous phase，the pH in external aqueous phase (aqueous solution)，the type and quantity of surfactants，and the ratio of emulsion and internal aqueous phase. The experiment showed that，under suitable conditions，the concentration of aniline was less than 1.5 mg·L-1 in the external aqueous phase treated by one-stage liquid membrane process when the initial concentration of aniline was 500 mg·L-1 in aqueous solution. The effects of surfactant’s structure and property on the viscosity of membrane phase

the viscosity of oil/water interface and the mass transfer of aniline were discussed.