The invention relates to defatting health-preserving tea and a preparation method thereof. The defatting health-preserving tea consists of lotus leaves, semen cassiae, chrysanthemums, poria cocos, Chinese yams and licorice roots. According to the defatting health preserving tea, the lotus leaves, the semen cassiae, the chrysanthemums, the poria cocos, the Chinese yams and the licorice roots are used as raw materials, all the traditional Chinese medicine components are in mutual compatibility and synergism, the lotus leaves and the semen cassiae have the defatting effects, and the chrysanthemums, the poria cocos, the Chinese yams and the licorice roots adjust organs of a human body to recover original functions by methods of benefitting qi and promoting digestion and promoting excretion, sothat surplus fat can be burnt. According to the defatting health-preserving tea, by methods of removing dampness, producing water, invigorating the spleen, promoting blood circulation, promoting thecirculation of qi and the like, in vivo excessive moisture as well as metabolic waste and toxin which are accumulated in bodies are removed, metabolism is accelerated, and the effect of reducing weight is achieved; and besides, the defatting health-preserving tea also contributes to recuperating viscera and endocrine, the energy metabolism function of the human body can be recovered, the circulation of qi and blood of the body can be better, and the purpose of healthy reducing fat and reducing weight can be fundamentally achieved.