Stripping dispersion hollow fiber liquid membrane system(SDHFLM) containing feed phase adding acetate buffer solution and dispersion solution with HNO_3 solution as the stripping solution and membrane solution of 2-ethyl hexyl phosphoric acid-mono-2-ethylhexyl ester(PC-88A) dissolved in kerosene,has been studied for the extraction of Sm~(3+).Many factors including pH value, volume ratio of membrane solution to stripping solution(OAV) and carrier concentration on Sm~(3+) extraction were investigated. Experimental results indicate that the optimum extraction conditions of Sm~(3+) were obtained as that PC-88A concentration was 0.120 mol/L,and OAV was 1.00 in the dispersion phase,and pH value was 4.80 in the feed phase.When initial Sm~(3+) concentration was 1.20×10~(-4) mol/L,the extraction percentage of Sm~(3+) was up to 92.8%in 160 min. Stripping dispersion hollow fiber liquid membrane system (SDHFLM) containing feed phase adding acetate buffer solution and dispersion solution with HNO 3 solution as the stripping solution and membrane solution of 2-ethyl hexyl phosphoric acid-mono-2-ethylhexyl ester (PC-88A) in kerosene, has been studied for the extraction of Sm ~ (3 +). Many factors including pH value, volume ratio of membrane solution to stripping solution (OAV) and carrier concentration on Sm ~ (3+) extraction were investigated. The optimum extraction conditions for Sm ~ (3+) were obtained as PC-88A concentration was 0.120 mol / L, and OAV was 1.00 in the dispersion phase, and pH value was 4.80 in the feed phase. Initial initial Sm ~ (3+) was was 1.20 × 10 ~ (-4) mol / L, the extraction percentage of Sm ~ (3+) was up to 92.8% in 160 min.