The invention discloses a compound feed being efficient and low in cost for young anguilla rostrata and a preparation method of the compound feed. The compound feed for the young anguilla rostrata consists of the following raw materials in parts by weight: hermetia illucens powder, vital wheat gluten, white fish meal, maggot powder, silkworm chrysalis powder, yellow mealworm powder, whey powder, blood powder, corn flour, high gluten flour, soybean flour, gracilaria verrucosa powder, lecithin, multiple vitamins, multiple minerals, methionine, glutamic acid and choline. According to the compoundfeed for young anguilla rostrata, the components are green and environment-friendly raw materials, healthy and environmental-friendly, and the raw materials are environment-friendly raw materials, thereby guaranteeing that products are free from residue of toxin and harmful substances, do not damage health of human, and are free from potential pollution to health of human, human and environment.In addition, the compound feed is low in cost, the growth rate of the young anguilla rostrata is increased, and the compound feed also contain substances having effect of improving the immunity, so that the compound feed can exert the corresponding effect, further, the disease resistance of the young anguilla rostrata can be improved, and the survival rate of the young anguilla rostrata can be increased.