The invention discloses flatstem milkvetch seed healthcare tea, which is prepared by flatstem milkvetch seed, diversifolious osmanthus branchlet leaf and bark, foldleaf daylily root and cuneate lespedeza herb with root according to a certain weight ratio. The healthcare tea has the effects of benefiting kidney, improving eyesight, securing essence, benefiting waist and knee, nourishing blood to calm liver, inducing diuresis to reduce edema and benefiting lung yin, is low in cost, good in effect, reasonable in formula, simple to prepare, easy to store, very convenient to drink and good in mouth feel, is fit for four seasons, can be used for treating diseases when the people are diseased and protecting the health when the people are not diseased, has a very good effect for the people with the diseases such as deficiency of liver and kidney, waist and knee pain, blurred vision, spermatorrhea, premature ejaculation, frequent urination, enuresis, dizziness, tinnitus, palpitation, hypopsia and the like, and is a very ideal healthcare drinking product.