The invention discloses a preparation method of oat oral liquid capable of lowering three highs (hyperglycemia,
hyperlipidemia and hypertension). The oral liquid is prepared from the following compositions in parts by weight: 20-40 parts of oat, 20-40 parts of malt, 20-40 parts of rice sprouts, 20-45 parts of Chinese yam, 3-9 parts of
panax notoginseng, 6-10 parts of sticktight, 6-12 parts of
semen cassia, 20-40 parts of scorched
hawthorn fruit, 20-40 parts of processed medicated leaven, 8-12 parts of radix puerariae, 8-12 parts of
astragalus, 8-12 parts of
tremella, 3-8 parts of cape jasmine, 8-12 parts of
herb pyrolae, 8-12 parts of dendrobe, 6-12 parts of rhizoma anemarrhenae, 8-12 parts of caulis spatholobi, 10-14 parts of
salvia miltiorrhiza, 10-20 parts of poria cocos, 8-12 parts of radix scrophulariae, 15-25 parts of
angelica sinensis, 8-12 parts of corn stigma, 8-12 parts of
honeysuckle flower, 10-15 parts of radices trichosanthis, 8-12 parts of
radix ophiopogonis, 8-12 parts of
asparagus fern, 6-12 parts of herba siegesbeckiae, 6-12 parts of harlequin glorybower leaf, 8-12 parts of rhizoma alismatis, 25-35 parts of
phaseolus calcaratus, 8-12 parts of
pyrrosia lingua, 3-9 parts of
panax notoginseng, 6-12 parts of nodus nelumbinis rhizomatis, 6-12 parts of
ligusticum wallichii, 8-12 parts of
gastrodia elata, 10-20 parts of
cistanche, 25-35 parts of buckwheat, 3-9 parts of
gynostemma pentaphylla, 8-12 parts of lucid
ganoderma, 8-12 parts of selfheal, 8-12 parts of the fruit of Chinese wolfberry, 6-12 parts of formosan lattuce
herb, 8-12 parts of radices stellariae dichotomae, 8-12 parts of rhizoma drynariae, 8-12 parts of liquorice, 10-15 parts of mother chrysanthemum, 8-12 parts of herba epimedii, 10-15 parts of apples, 6-10 parts of onion, 8-12 parts of celery and 8-12 parts of hawthorn.