When yang deficiency and yin cold appear, it will be manifested as weakness of waist and knees, general fatigue, hot flashes and night sweats, shortness of breath, laziness, nervous fever, dry mouth and other symptoms, and it will also affect various unwell symptoms of the body. If the diagnosis has been made, drugs such as Sijunzi Decoction, Liuwei Dihuang Pill and Maiwei Dihuang Pill can be taken orally to relieve symptoms. At the same time, we should also increase physical exercise appropriately to avoid staying up late and overworking. Yang deficiency and yin cold can be treated by taking some Chinese patent medicines with the functions of nourishing liver and kidney, nourishing yin and reducing fire. Night sweats may be caused by deficiency of kidney due to deficiency of yin and fire, or deficiency of heart and spleen, which is related to excessive thinking and low immunity. At ordinary times, we should keep a happy mood, avoid staying up late, focus on a light diet, eat more foods that help to tonify the kidney, such as leeks and dog meat, or relieve it through acupuncture and physical therapy. Sleeping at night always leads to night sweats, which are mostly caused by yin deficiency of liver and kidney and internal heat, because our body is in a state of balance of yin and yang. When yin deficiency occurs, the body yang will be higher, resulting in internal heat. When sleeping at night, the yang will gather in the body, aggravating internal heat, and sweating forcibly will cause night sweats. If you recuperate, first, you can choose drugs such as Liuwei Dihuang Pill, Baizhi Dihuang Pill and Dabuyin Pill. Second, pay attention to light diet, don't eat too much spicy food, and you can eat nourishing ingredients such as yam porridge or tremella lotus seed soup. No smoking, no drinking, no anger, no staying up late. Thirdly, you can also do appropriate outdoor sports, such as playing Tai Ji Chuan or Baduan Brocade. Do not eat spicy, greasy and greasy food. Alcohol and tobacco should be kept away. Usually eat more irritating foods, such as onions, ginger, garlic and so on. And eat as little as possible.