The invention discloses a fermented-aroma-type environment-friendly puffed slowly-sinking compound feed for culturing crucian. A feed base material is prepared from, by weight, 20-25 parts of soybean meal, 20-25 parts of cottonseed meal, 20-27 parts of wheat, 10-15 parts of rapeseed meal, 15-20 parts of rice bran, 0.2-0.4 part of moringa seeds, 8-10 parts of vinegar residues, 1-2 parts of mineral substance premix, 0.3-0.5 part of vitamin premix, 1.5-2 parts of monocalcium phosphate, 1.5-3.5 parts of fish oil, 1-2 parts of calcium propionate, (1-3)*10<-6> part of phytase and 0.2-0.5 part of a Chinese herb additive. In the preparing process, main raw materials and accessory material are mixed evenly, the mixture is subjected to microbial fermentation, smashed, puffed and subjected to extrusion granulation, and then the environment-friendly puffed slowly-sinking compound feed, high in digestion and absorption rate, for crucian is obtained. By feeding crucian with the feed, water contamination can be reduced, the survival rate of crucian can be increased, feeding cost can be reduced, and meanwhile cultured crucian is good in bodily form, strong in disease resistance, and capable of providing delicious meat and achieving a healthcare effect on the human health.