The invention provides a health-care flour composition and food and a preparing method thereof. According to the preparing method, hericium erinaceus and flour are used as main raw materials, swelling agents, sweetening agents, oil, salt and the like are added and mixed with water, and then rolling, forming, baking, oil injection and cooling are carried out to obtain various foods made of flour or pastries such as cookies, cakes and noodles. The health-care flour composition and food are even in texture, capable of being stored for a long time easily, good in mouthfeel and rich in nutrient, and market vacancy is filled. The health-care flour composition and food have definite effects in repairing gastric mucosal damage caused by chronic gastritis, or gastric ulcers or duodenal ulcers, relieving abdominal pains caused by chronic gastritis, or gastric ulcers or duodenal ulcers, inhibiting helicobacter pylori, and assisting the treatment of chronic gastritis, gastric ulcers and duodenal ulcers.