The invention discloses a dampness eliminating solid beverage and a preparation method thereof. The dampness eliminating solid beverage is prepared from the following components in parts by mass: 15-25 parts of semen coicis powder, 10-20 parts of poria powder, 8-12 parts of Chinese yam powder, 2.5-3.5 parts of gorgon fruit powder, 8-12 parts of red bean powder, 8-12 parts of red date powder, 5-9 parts of radix puerariae powder, 1.5-2.5 parts of hawthorn powder, 1.5-2.5 parts of malt powder, 0.8-1.2 parts of white lablab bean powder, 0.8-1.2 parts of lily extract, 0.8-1.2 parts of radix angelicae dahuricae powder, 0.8-1.2 parts of medicated leaven powder, 0.16-0.23 part of tangerine peel extract, 0.08-0.12 part of fructus amomi extract, 0.08-0.12 part of herba pogostemonis extract, 0.08-0.12 part of folium perillae extract, 0.16-0.23 part of radix platycodi extract, 0.08-0.12 part of fructus gardeniae extract, 0.08-0.12 part of licorice root extract, 2.5-3.5 parts of walnut powder, 0.35-0.55 parts of semen cassiae extract, 6-9 parts of water-soluble dietary fibers, 4-6 parts of maltodextrin, 0.15-0.25 part of acesulfame potassium and 0.4-0.6 part of silicon dioxide. The dampness eliminating solid beverage is carefully developed, is reasonable in proportion and is capable of dispelling wind, removing cold, eliminating dampness, sweating, promoting circulation of qi, tonifying spleen and inducing diuresis to alleviate edema.