The main problem to be solved during the breeding period of lactating cows is how to increase the milk production of the cows, so that sufficient milk can be provided to the calves, and the cows need to consume more nutrients during the lactation period than during pregnancy. There are many other growth periods. During this period, there are generally four stages. Each stage of feeding has certain differences. The following is a detailed introduction for everyone. In addition, the medication during cattle breeding is also reasonable and principled. In terms of breeding management, special care is needed in the cold season to keep the cows healthy and cold.