The invention discloses a plant component slimming health-care product and a preparation method thereof. The plant component slimming health-care product is prepared from the following raw materials:de-ionized water, 1,3-butanediol, propylene glycol, D-panthenol, bio-saccharide gum-1, a dendrobium officinale kimura ex migo extracting solution, allantoin, dipotassium glycyrrhizinate, guarana extract, hedera helix extract, chili extract, hydroxyethyl cellulose, disodium EDTA (Ethylene Diamine Tetraacetate), sodium hyaluronate, p-hydroxyacetophenone and 1,2-hexanediol. According to the plant component slimming health-care product disclosed by the invention, traditional Chinese medicine active substances including guarana, hedera helix, chili and the like have a natural skin-conditioning function, and can be used for enhancing the compaction capability of organisms and capability of reducing areolar tissues; the plant component slimming health-care product is used for promoting fat combustion to develop a body toward a healthy direction, promote skin rejuvenation of the body and reduce ageing, so that the slimming health-care product which has a good slimming property, does not contain harmful components including hormones, heavy metal and the like, and has high safety.