The invention discloses health care tea capable of clearing the lung and eliminating phlegm and a preparation method thereof. The health care tea is prepared from, by weight, 15-20 parts of herba taraxaci, 15-20 parts of sweet stevia, 20-25 parts of fructus hordei germinates, 6-10 parts of rice-grain sprouts, 8-10 parts of stigma croci, 7-9 parts of dried Chinese white olives, 4-6 parts of fresh bitter gourds, 6-8 parts of red dates, 5-7 parts of asparagus juice, 4-7 parts of radix polygoni multiflori, 3-5 parts of mulberry twigs, 4-6 parts of fructus crataegi, 3-5 parts of onions, 2-4 parts of chuanxiong rhizomas, 5-7 parts of radix scutellariae, 4-6 parts of Chinese starjasmine stems, 3-5 parts of herba taxilli, 3-5 parts of fruits of cocos nucifera L., 3.5-6 parts of carrot juice, 8-12 parts of nutritive juice, 1-3 parts of vitamin E and 3-5 parts of aspartame. The health care tea is scientific and reasonable in constituent compounding, quite abundant in nutrition, fine in taste and easy to prepare, all raw materials of the health care tea are rich in multiple nutritive constituents such as vitamins and cellulose, meanwhile, the health care tea is higher in health care value and has the effects of promoting production of body fluid, nourishing the lung, relieving cough, reducing sputum, clearing away heat and toxic materials, promoting urination, relaxing the bowels and the like, and the health care tea is deeply loved by a great number of people.