As we all knows, winter is very cold.For against the cold, people usually eat more food. As the seam reason, feed intake of laying hens also increased significantly in winter. In cold winters, laying hens need to consume more nutrients to keep warm, so feed intake increases. When the chicken house’s temperature is lower than 22℃, the chicken feed intake increases by 1.3-1.5 grams per 1°C drop. Under these circumstances, we must pay more attention to chicken. In addition to improving the temperature of the chicken house under the premise of ensuring air quality, the more important is the ration should be converted into a winter diet, which means that more energy feed should be provided to resist the influence of low temperature.