The invention belongs to the technical field of feed processing, and discloses a feed for breeding cows. The feed contains the following raw materials: corn, bean pulp, barley, hay, sorghum, fish meal, soybean, bean dregs, colza oil, lactic acid bacteria, salt, pericarpium citri reticulatae and hawthorn; a preparation method of the feed comprises the following steps: primary processing, grinding and mixing, feed palletization, packaging and sealing for storage. The feed solves the problems that the existing feed in the prior art can cause bloating in rumen of cows after being fed.