Considering the evaluation indexes of foaming capability, foam half-life time and interfacial tension, CEA/FSA1 and CEA/DHF-1 in mass ratio 7:3 were firstly chosen as two kinds of mixed foam systems in the simulated water-oil condition of Gaoqianbei reservoir of Jidong oilfield. The comprehensive properties of CEA/FSA1 and CEA/DHF-1 was good with 152 mL and 140 mL foaming volume, 72 min and 63 min half-life time, 21.144 and 19.881 dimensionless filter coefficient, and 10-3 magnitude interfacial tension, respectively. The foam performance evaluation experiments showed that the foaming volume decreased to 110 mL, the half-life time decreased to 40 min, and the dimensionless filter coefficient decreased to 1.180 when CEA/FSA1 reacted with Jidong oil. Compared to CEA/DHF-1, CEA/FSA1 had better oil tolerance, temperature tolerance and aging resistance ability. It was recommended as foam agent for natural gas foam flooding in Gaoqianbei reservoir of Jidong oilfield and the dosage was of 0.5%. The single tube blocking experiment showed that the resistance factor of CEA/FSA1 was of 127, which meant CEA/FSA1 had good plugging performance. When CEA/FSA1 was mixed with Aisen polymer, the resistance factor of enhanced foam system was of 438, which meant the compatibility of CEA/FSA1 and Aisen polymer was good. In double tube displacement experiment, the recovery ratio of enhanced foam flooding increased by 22.9% and that of high and low permeability tubes increased by 18.8% and 27.0% respectively after water flooding.