Gas channeling is easy to occur during air injection in Bohai 34-2 high temperature and low permeability reservoir. There are many limitations in conventional control methods，so it is urgent to study new profile control technology. Based on the dual characteristics of polymer viscosity increasing and foam profile control，a new polymer foam profile control system was developed， and the foam stability and shear resistance of the system were tested. The plugging performance and action range of the new profile control system were evaluated through indoor displacement experiment and CT scanning. On this basis，the two-dimensional model was used to carry out the anti channeling experiment of water gas alternation（WAG）after air injection and the anti channeling experiment of profile control agent after air injection. The results showed that the plugging rate of core with permeability of 35×10^-3 μm² was up to 98% at 130 ℃ and the gas channelling could be well suppressed by the polymer foam profile control system. After gas breakthrough，WAG method could improve oil displacement efficiency by 10.14%. However，the oil displacement efficiency was improved by 15.81% using the injection compound foam profile control system and then gas flooding，which was more than 5% higher than that of conventional WAG. Polymer foam profile control system had good plugging ability and could enhance oil recovery under high temperature，which provided a new idea for gas injection and channeling prevention in similar high temperature and low permeability reservoirs.