Although dairy cows have cold and heat-resistance habits, due to abnormally cold winters and dry climate, poor feeding and management, together with scarcity of green fodder, can easily lead to a decline in milk production and even affect the normal growth and development of dairy cows. The author believes that winter cows should strictly control the "five levels": Keep warm and keep warm off in winter, the temperature inside the barn should generally be maintained at 8 °C -17 °C, the temperature is too high will have side effects on cattle. When the temperature falls below 0°C during the night, the cows should be put into the shed overnight to avoid excessive consumption of frostbite or physical energy. When the cold air is invaded and the temperature suddenly drops, the rear window and the ventilation hole should be blocked in time, and the insulation of the housing should be done well. In particular, the perinatal cows, new calves, and high-yield cattle should be properly warmed to ensure that the temperature of the cowhouse is between 15°C and 17°C. In addition, cows should not spend more than 6 hours during the day in the stadium. It is better to have 3 hours of activities in the morning and in the afternoon. After all the good humidity adjustment cows are put into the pens, it is necessary to ensure that the inside of the barn is well ventilated, the humidity can not be too large, and the relative humidity should not exceed 55%. If the humidity is too high, there will be a strong external stimulus to the cow, which will affect its milk production. In severe cases, it will also infect some fungal diseases. At the same time, it is necessary to remove urine in time and keep the house clean and dry. After adjusting the good feed into the winter season, the feed ratio should be adjusted in time to diversify. In the supply of concentrate feed, the protein feed will not change, and the supply of corn will increase by 20%-50% to increase the proportion of energy feed; in the aspect of roughage, it is best to feed silage, micro-microbial feed or brewer's grains, etc. This replaces the green and juicy feedstuffs consumed by cows in summer and autumn. The cow's forage composition is relatively single, can add appropriate amount of calcium and phosphorus in its feed, generally can feed 5-15 grams per day. Urea is an effective source of protein supplements and can be fed on a diet. Generally, calves aged over 6 months are fed 30-50 grams a day, young cattle are fed 70-90 grams a day, and adult cows are fed about 150 grams a day. However, urea is poor in palatability, and it can be mixed with 1% of the concentrate and fed with grass. It is not advisable to drink water within half an hour after feeding. Warming drinking water and warming the tap water and well water that have not been warmed up are prone to freezing in the winter. After drinking, cows often cause indigestion and induce digestive diseases. Therefore, when drinking cows, it is best to heat the water to 15°C-25°C. If you add salt and bean curd to warm water, it will not only increase the appetite of the cow, but also have a fire-retarding and anti-inflammatory effect. Brushing the body with a good body brush not only keeps the cow clean, but also promotes skin blood circulation and metabolism, helps regulate body temperature and enhances disease resistance. Therefore, brush twice a day, morning and evening, 3-6 minutes each time, carefully brushing all parts of the body, not omissions. In addition, it is necessary to regularly sterilize cowsheds and sports grounds and vaccinate them according to the epidemic prevention procedures. Early treatment of the disease is found to ensure the health of dairy cows and ensure the prolific milk production. Medton Medical , https://www.medtonmedical.com