Weight-reducing composition and preparation method thereof

The invention provides a weight-reducing composition and a preparation method thereof. The composition is prepared from the following raw materials in parts by weight: 9-15 parts of lotus leaves, 2-9 parts of tuckahoe, 2-8 parts of kelp and 5-11 parts of hawthorn. The preparation method of the composition comprises the following steps of: (1) weighting suitable amounts of lotus leaves, tuckahoe, kelp and hawthorn; (2) decocting and extracting once or more for 1-3 h, wherein water which is 6-10 times the amount of the raw materials is added every time; (3) filtering the decocting liquid, concentrating into extract with the relative density of 1.30-1.35 at 50 DEG C, drying and crushing the extract into fine powder for storage; then, uniformly mixing the fine powder and suitable accessoriesaccording to the process requirements of the formulation, pelletizing and drying into granules; capsuling into a capsule preparation or tabletting into tablets or adding water to dissolve and fillingin bottles to form various