The invention provides health-maintaining porridge for preventing coronary heart diseases. The health-maintaining porridge is packaged in bags and is composed of traditional Chinese medicines and millets. The traditional Chinese medicines are as follows in parts by weight: 10-15 parts of pseudo-ginsengs, 10-12 parts of fructus trichosanthis, 9-13 parts of curcuma aromatica, 12-16 parts of bitter apricot seeds, 8-12 parts of lucid ganoderma, 10-15 parts of platycodon grandiflorum, 5-10 parts of aster tataricus, 8-12 parts of radix aucklandiae, 15-18 parts of white paeony roots and 8-12 parts of glycyrrhiza uralensis. The health-maintaining porridge is prepared by vacuum package and is convenient and rapid to use; selected traditional Chinese medicine components are reasonable so that the health-maintaining porridge has the effects of eliminating phlegm by cooling, nourishing blood and tonifying liver and promoting qi circulation to relieve pain; the health-maintaining porridge has an obvious curative effect, has no toxic side effect and no anaphylactic reaction, is safe and sanitary, and is convenient and rapid to use.