The invention relates to a marine product, namely a sea cucumber serving as a food, in particular to an artificial sea cucumber and a preparation method thereof. The artificial sea cucumber is prepared from a skin material and a meat material in a weight ratio of 15-16:26-27, wherein the skin material consists of a sodium alga acid, a salt, a konjak modified starch, a soybean oil, a meat jelly (a pork extract), an edible burnt sugar pigment and water in percentage by weight; and the meat material consists of a sodium alga acid, a salt, a starch, a soybean oil, a pig skin jelly, an edible burnt sugar pigment, water and sea mandrake or stichopus japonicus in percentage by weight. The artificial sea cucumber mainly solves the technical problem that the present natural sea cucumber is high in price; the mouthfeel of the artificial sea cucumber is the same as that of the original sea cucumber; the taste is better; the nutritious components of the artificial sea cucumber are richer; and the artificial sea cucumber can be called civilian sea cucumber because of low price.