The invention discloses pressure lowering and lipid lowering sweet corn soup and a preparation method thereof. The pressure lowering and lipid lowering sweet corn soup consists of the following raw materials in parts by weight: 40-50 parts of corn, 10-15 parts of oat, 5-10 parts of leek, 5-10 parts of pawpaw, 5-8 parts of cucumber, 4-6 parts of celery, 5-8 parts of chicken meal, 3-5 parts of coix seed, 3-4 parts of tangerine peel, 2-4 parts of mulberry leaf, 1-3 parts of cochinchinese asparagus root, 2-3 parts of ginkgo leaf, 1-3 parts of gynostemma pentaphyllum, 2-4 parts of medlar, 1-3 parts of egg, 2-3 parts of lactic acid bacteria tablet, 5-6 parts of grape juice and 5-7 parts of nutritional additive. The pressure lowering and lipid lowering sweet corn soup prepared by the invention is convenient to store, carry and eat, can be eaten after a can is opened, contains various nutrient substances, is rich in nutrition, has good mouthfeel, can also lower the lipid and can be eaten by various kinds of people; the formula contains natural plant compositions such as the tangerine peel, the mulberry leaf, the cochinchinese asparagus root and ginkgo leaf; the sweet corn soup has the effects of lowering lipid, lowering pressure, tonifying lung, strengthening spleen, protecting liver and nourishing kidney, can be eaten for a long time, can nourish the five internal organs, improves the immunity and has a health care effect of strengthening the body.