The invention discloses edible collagen jelly and a preparation method thereof. The jelly is prepared from the raw materials in parts by weight: 100 parts of bone collagen, 15-20 parts of lentinula edodes, 5-10 parts of hericium erinaceus, 15-20 parts of chestnut inside peel, 10-15 parts of tuckahoe, 20-25 parts of Chinese goosebeery, 15-20 parts of spinach, 1-5 parts of pagoda tree flower, 5-10 parts of white gourd seed, 10-15 parts of lotus root, 15-20 parts of pomelo peel, 10-15 parts of sweet potato, 5-10 parts of wheat bran, 5-10 parts of red bean, 10-15 parts of seaweed, 1-5 parts of fishbone, 1-5 parts of fishskin, 1-5 parts of fishscale, 1-5 parts of calcium gluconate and 0.1-0.3 part of zinc gluconate. According to the jelly and the preparation method thereof, the formula is unique, and the collagen is prepared into a jelly shape, so that the oral taking and carrying are more convenient; through the synergism of all the ingredients, the jelly disclosed by the invention can play roles in strengthening immunity, expelling toxin, protecting the liver, relaxing the bowels, repairing, resisting oxidation and the like, and has very good effects on maintaining beauty and keeping young and caring health.