The invention relates to the field of nutritional functional foods and provides an instant food capable of preventing and lowering hyperglycemia, hyperlipidemia and hypertension, and specifically relates to an instant food capable of preventing and reducing the hyperglycemia, the hyperlipidemia and the hypertension. The instant food is prepared by mixing oats, barley, wheat, buckwheat, rye, tartary buckwheat, inulin, L-arabinose, polydextrose, xylooligosaccharide, a fructus momordicae charantiae extract, a fructus lycii extract, a hawthorn extract, a radix puerariae extract, a grosvenor momordica fruit extract, a mulberry leaf extract, a ginkgo extract, rhizoma dioscoreae powder, pumpkin powder, barley seedling powder, rivier giantarum rhizome powder and a compound nutrient. The instant food is rich in nutrition, can regulate blood sugar, blood fat and blood pressure, can well promote metabolism of a human body, is beneficial to intestinal health, is matched according to the traditional Chinese medicine principle and a dietary nutrition rule, does not have the hypersensitivity and toxic or side effects and is safe and reliable after being eaten.