The invention disclsoes a preparation method and a process of a compound medicated diet for reducing hypertension, hyperglycemia and hyperlipidemia. The preparation methodcomprises the following steps: step 1, taking 0.8 g of a chrysanthemum extract, 0.4 g of an angelica sinensis extract, 0.5 g of a polygonatum odoratum extract, 2 g of a green tea extract, 0.8 g of a Chinese wolfberry fruit extract, 0.4 g of a salvia miltiorrhiza extract, 0.3 g of a radix curcumae extract and 0.8 g of a gynostemma pentaphylla extract, uniformly mixing, and putting all the materials into a stainless steel granulator for later use; the invention has the beneficial effects that through the synergistic effect of a plurality of flavonoids, polyphenols, saponins and other compounds in the medicated food and a plurality of functional enzymes, the medicated food can effectively remove blood stasis and activate blood, disperse aggregated red blood cells, remove garbage and toxic scales adhered to blood vessel walls, dissolve thrombus and expel toxins, unblock blood vessels and protect cell membranes from being oxidized, and is extremely remarkable in dietary therapy effect; meanwhile, the occurrence of major cardiovascular and cerebrovascular diseases is reduced, and the medicine diet is convenient, can be made into soup, tea and porridge, has extraordinary effects of reducing hypertension, hyperglycemia and hyperlipidemia, regulating immunity and moistening lung and stomach, and is the best diet for people suffering from hypertension, hyperglycemia and hyperlipidemia to eat.