The present invention discloses a fermentation aroma type antibiotic-free enteritis-preventing ctenopharyngodon idellus young fish formula hard-particle feed, wherein soybean meal, lutjanus erythopterus powder, cottonseed meal, wheat, rapeseed meal, ramie fiber, Chinese herb powder, a feed additive, a mineral premixed material, calcium dihydrogen phosphate, calcium propionate and other raw materials are fermented, the fermented materials are dried, and crushing and low temperature granulation are performed to obtain the high digestion rate and high absorption rate fermented antibiotic-free ctenopharyngodon idellus young fish formula hard-particle feed. According to the present invention, the feed has advantages of high feed utilization rate, high anti-nutrition factor damage rate, high stability in the water and low feed coefficient; and with the application of the feed to feed the ctenopharyngodon idellus, the advantages of health fish intestinal tract, water pollution reducing, ctenopharyngodon idellus young fish survival rate improving, feeding cost reducing, good breeding fish shape, strong disease resistance, low incidence, effective prevention of the occurrence of stress enteritis, prevention of group infectious diseases, delicious fish meat, rich nutrition and human health care can be provided.