The invention relates to a foam scrubbing agent with salt resistance and methanol resistance. The foam scrubbing agent comprises the following components by weight percent: 20-40% of cocoamidopropyl betaine, 45-65% of amine oxide, 5-20% of alpha-olefin sulfonate, 5-15% of triethanolamine, 0.2-2% of fluorocarbon surfactant and 0-5% of methanol, wherein the sum of the weight percentages of the components is 100%. By adopting the foam scrubbing agent, the drainage gas recovery problem of the methanol injection gas well with high salinity can be solved, the continuous and stable production of thegas well can be ensured and the open well rate can be increased.