The invention belongs to the technical field of the research and development of medicine products, and relates to a method for preparing a compound ginseng preparation and application thereof. The method comprises the following steps of: selecting the following components: 6 to 9 grams of ginseng, 6 to 9 grams of astragalus, 3 to 6 grams of eucommia bark, 3 to 6 grams of glossy ganoderma, 3 to 6 grams of Chinese angelica, 2 to 4 grams of leonurus, 2 to 4 grams of tangerine peel, 1 to 2 grams of Indian buead, 1 to 2 grams of hawthorn fruit, 1 to 2 grams of medicated leaven and 1 to 2 grams of liquoric root, cleaning, performing microwave drying, and crushing to form 50-mesh powder; adding water, boiling, extracting for three times, merging extract, and filtering to obtain filter liquor; and concentrating the filter liquor to form extractum, mixing the extractum, agar and starch in a ratio of 4:1:16 uniformly, pelletizing by using a 10-mesh sieve, drying, and sieving with a 14-mesh sieve to obtain the compound ginseng preparation. The compound ginseng preparation has the promoting effect on the growth of fancy carps and is favorable for industrial production.