The present invention discloses an eurycoma longifolia compound granule and a preparation method thereof. The eurycoma longifolia compound granule contains the following raw materials (in weight percentage): pure malt, eurycoma longifolia, stevioside and pomegranate polyphenols. The preparation method of the eurycoma longifolia compound granule consists of the specific steps as follows: treating and blending the raw materials, mixing, canning, packaging and storing. When mixing the raw materials, the roots and stems of the eurycoma longifolia are crushed and canned, pure water with 12-14 times of eurycoma longifolia is added, the eurycoma longifolia are boiled and extracted for three times, the extracts are filtered using a plate and frame filter in 2.5-3.5 hours after each extraction, and the three extracts are blended after the completion of the three boiling and extracting to obtain the eurycoma longifolia extract. The eurycoma longifolia compound granule has simple preparation method, is convenient to eat, can effectively merge the active substances in the eurycoma longifolia and pomegranate polyphenols together, can reduce uric acid by repairing kidney and soften blood vessels, has certain degree of alleviation function on diabetes and hypertension, helps improve joint and skin elasticity, and strengthens arteries, veins and capillaries.