The invention discloses a preparation method of a health care product for clearing away heat and promoting urination. The method comprises the following step: an excipient, tender leaves of sinocalamus affinis, herba taraxaci, beta vulgaris roots, periostracum cicada, radix ophiopogonis, Japanese polypody rhizomes, semen cuscutae, zaocys dhumnade, fructus aristolochiae, garden erphorbia herbs, caulis sargentodoxae, darkpurple winter daphne bark, deep-fried largehead atractylodes rhizomes and radix salviae miltiorrhizae are weighed. The product has effects of clearing away heat, promoting urination, invigorating the spleen, promoting diuresis and nourishing the stomach, has low cost and high operability, and is pollution-free to the environment, safe and environmentally friendly, and the preparation method is simple; the product has the advantages of promoting fluid production, benefiting the lung, being short in disintegration time, good in decomposition state and easy to absorb, taking effect quickly and avoiding toxic and side effects; the tender leaves of sinocalamus affinis and the herba taraxaci act synergistically to achieve effects of strengthening the spleen, moistening thelung, clearing brain, treating faintness, improving energy, preventing dementia, eliminating phlegm and inducing resuscitation; components in the prescription are synergistic, thereby clearing away heat, promoting urination and keeping energetic; the product is used for yellow and short urine, impotence, spermatorrhea, asthenia of essence and blood, insomnia, dreaminess and cough with excessive phlegm, and can be widely produced and continuously replace existing materials.