The invention relates to a production method of special dietary protein powder for gastrosis patients for eating, and belongs to the field of special dietary foods. The stomach is an important digestive organ, and has the physiological functions of storing and transferring food, digesting food, killing bacteria and the like. The protein powder is prepared from peanut protein powder and soybean protein powder as main raw materials, is added with walnut kernel and millet powder as food raw materials, and is assisted by edible and medicinal Chinese herbal medicines such as hawthorn, gardenia, fructus amomi, malt, endothelium corneum gigeriae galli, honey and dandelion to form a food formula for a special diet. The method comprises the following steps: treating raw materials; mixing, jordaning, homogenizing, spraying powder, filling and sterilizing to obtain the powdery food, wherein the powder food is eaten after being dissolved with warm boiled water. According to the special dietary protein powder prepared by the method, diet is organically combined with health maintenance to condition and prevent a stomach illness; and the special dietary protein powder has the effects of improving digestion and relaxing the bowels, has an auxiliary protection effect on gastric mucosal injuries, integrates dietary therapy, prevention and conditioning, and is especially suitable for gastrosis patients for eating.