Abstract: Low carbon alcohol is often used as additives for surfactant because of its better synergistic effect with surfactant. This paper investigates the effect of low carbon alcohol on the foaming performance of α?olefine sodium sulfonate solution with low mass fraction of 0.02%. The result shows that the synergistic effect of this solution with high mass fraction of 0.2% is not obvious on the low carbon alcohol;there exist obvious synergistic effects between the α?olefine sodium sulfonate solution with low mass fraction of 0.02% and such three alcohols as isopropanol, n?butyl alcohol and isoamyl alcohol, respectively, showing that these alcohols can greatly improve the foaming performance of low mass fraction sulfonate solution, and with the increasing of the carbon number of alcohols, the foaming performance becomes better and better, except for methanol and ethanol. Also, NaCl and CaCl2 with high mass fraction may not be directly used to improve the foaming performance of the solutions with low mass fraction, while isoamyl alcohol can do it well in presence of the NaCl and CaCl2, and with the increasing of isoamyl alcohol’s mass fraction, the synergism effect also becomes better and better