The separation of indole (In) contained in coal tar fraction (the temperature range of distillate: 240~265 ℃) was examined by a liquid surfactant membrane. According as increase the volume fraction of O/W emulsion to total liquid in a batch stirring tank at initial (φOW,O), the yield of In and the selectivity of In based on dimethylnaphthalene (DMN) decreased rapidly, but yields of 1-methylnaphthalene (1MN), 2-methylnaphthalene (2MN), DMN, biphenyl (Bp) and phenyl ether (Pe) were looked tendency that increase some. At t=40 sec and 0.1<φOW,O<0.4, the yield of In was 11%-35%. At the same conditions, also, the selectivity of In based on DMN was 4-19. At a fixed experimental condition, the sequence of the yield was quinoline>iso-quinoline=quinaldine>In>1MN=2MN>Bp=Pe>DMN.