Abstract: Based on the foundation of typical steam huff and puff well model, the performance of flue gas assisted steam huff and puff for super?heavy oil reservoir was studied by numerical stimulation. The results show that flue gas assisted steam huff and puff for super?heavy oilcan improve energy utilization efficiency, reduce the volume of steam injection and improve cumulative oil steam ratio, meanwhile, reduce the environment pollution. The optimized injection parameters are then obtained, such as that the cyclic injection volume of flue gas is 60 000 m3, the injection rate of flue gas is 800 m3/h, the cyclic injection volume of steam is 1 000 t, the soak time is not less than 3 d, the cyclic time is 6 mon, besides, the CO2 content in flue gas is more than 20% and the flue gas injection temperature is higher than 100℃ are also beneficial to improve the oil production