The invention discloses a highly-effective antidysenteric early milk-fat calf opening material, which comprise the following weight shares: granule materials B- 60-80, tabletting corn 17-36 and molasses 2-4, wherein the granule materials B comprises materials with the following weight shares: corn 45-60,
soya bean waste 10-20,
fermentation soya bean waste 4-10, swelling soybean 0-5, concentrated
soybean protein 0-5, whey
powder 5-10, molasses 1-3, saccharose 1-2, amylaceum 1-2, lycine 0.8-1.0, acimetion 0.05-0.15,
calcium hydrogen orthophosphate 1.5-2.5, stone
powder 0.8-1.2, salt 0.4-0.8, calf premix 1-1.4, acidating agent 0.2-0.4,
antioxidant 0.05 and moderate 0.05. The method for preparing calf opening material comprises firstly adopting secondary cubing technology to process granule materials, then, evenly mixing particle food and tabletting corn, and then, spraying molasses on the surfaces of particle food and tabletting corns. Animal test results show that the calf opening material has better
palatability, can effectively prompt animals to take in feed, achieves early-
weaning within 45 days, can effectively control the loose bowel movement
generation rate of calves, and prompts the growth of calves.