The invention belongs to the field of food processing and relates to a method for processing fish sausages containing oat and Herba Portulacae. The fish sausages are prepared from, by weight, 55-60 parts of minced fish, 5-7 parts of oat powder, 6-9 parts of Herba Portulacae, 2-3 parts of Fructus Mori, 3-6 parts of Herba Menthae, 2-4 parts of Herba Perillae, 2-3 parts of Exocarpium Citri Leiocarpae, 2-4 parts of white sugar, 2-4 parts of non-muscle protein, 3-4 parts of potato starch, 1-3 parts of konjac gum, 6-8 parts of edible oil, 1-2 parts of salt, 2-3 parts of flavorings (including monosodium glutamate, ginger, mashed garlic, Sichuan pepper powder, chili powder, cooking wine and soybean sauce) and 2-3 parts of sausage casings. The materials are subjected to chopping, mixing, filling, radio-frequency and water coupled heat treatment, cooling and the like to obtain finished products. By addition of oat powder, Herba Portulacae, Fructus Mori, Herba Menthae, Herba Perillae and Exocarpium Citri Leiocarpae into the fish sausages containing oat and Herba Portulacae, the fish sausages are free of fishy smell and rich in nutrition, and the products have efficacies of spleen tonifying, lung moistening, heat clearing, pathogenic fire purging and vascular sclerosis preventing. Compared with a traditional two-stage heating technique, the method has advantages of flavor improvement of the fish sausages, shortening of curing time and reduction of energy consumption.