The invention provides a gynostemma pentaphyllum health-care tea capable of lowering blood sugar and blood pressure, which is prepared from the following raw materials in parts by weight: 10-50 parts of gynostemma pentaphyllum, 10-20 parts of Mangnolia officinalis, 10-20 parts of elsholtzia, 10-20 parts of Herba Lysimachiae, 10-20 parts of cogongrass rhizome, 10-20 parts of tuckahoe, 10-20 parts of radix salviae miltiorrhizae, 10-20 parts of Polyporus umbellatus, 10-20 parts of eupatorium, 10-20 parts of coix seed, 10-20 parts of mistletoe, 10-20 parts of Plantain seed, 10-20 parts of radix trichosanthis, 10-20 parts of radix scutellariae, 10-20 parts of Bighead Atractylodes Rhizome and 10-20 parts of corn silk. The gynostemma pentaphyllum has the effects of lowering blood fat, blood pressure and blood sugar, tranquilizing the mind, promoting sleep, resisting stress, ulcers and fatigue, prolonging the cell life, increasing the appetite, enhancing the resistance, relaxing the bowels, relieving asthma, relieving cough, eliminating hemorrhoids, reducing weight, treating asthenic symptoms, inhibiting gallstone from formation, controlling side effects of glucocorticoid, resisting aging and the like. Gynostemma pentaphyllum leaves used as the raw material are manually picked, and processed into the health-care tea by an old tea preparation technique and a traditional Chinese medicine decoction piece technique. The health-care tea has the advantages of green soup and subtle fragrance, tastes slightly bitter and mellow, and is suitable for long-term usage.