In summer, we must pay attention to eat less hot food, such as mutton. It's better to eat light and greasy food that is easy to digest. The principle is to refresh and cool, replenish the consumed substances and supply the needs of the body. We need to take nutritious foods that are bitter cold, light, moistening yin, invigorating spleen, heat-clearing and detoxifying. Don't eat too much in one meal. Avoid spicy, greasy, dry and hot food that helps yang produce heat and fire. We should focus on food therapy.