The invention discloses foot soaking powder for treating tinea pedis and a preparation method thereof. The foot soaking powder consists of the following ingredients in parts by weight: 1-300 parts of zingiber officinale Rosc., 1-200 parts of pseudolarix amabilis., 1-200 parts of cnidium monnieri (L.) Cuss., 1-300 parts of dictamnus dasycarpus Turcz., 1-200 parts of phellodendron Chinese Schneid, 1-150 parts of leguminosae, 1-150 parts of spatholobus suberectus Dunn, 1-200 parts of polygonatum sibiricum Red., 1-180 parts of auckiandialappa Decne. and 1-90 parts of crataegus pinnatifida. The preparation method comprises the steps of weighing traditional Chinese medicine raw materials according to a formula, cleaning, draining, putting the raw materials in drying equipment at the temperature of 80-100 DEG C and drying until the water ratio is not higher than 5%, mixing, crushing until the granule diameter is 50-120 meshes, sterilizing and packaging. The foot soaking powder takes various natural Chinese medicinal herbs as raw materials, and is free from toxic and side effects, in addition, tinea pedis treating and traditional Chinese medicine foot soaking are combined, so the foot soaking powder can enhance blood circulation, and regulate middle qi and promote qi circulation to remove meridian obstruction, and has obvious effects on tinea pedis, beriberi, foot odor and skin ringworm.