Night sweating in bed refers to sweating during the day, but sweating after falling asleep, which is more common in Chinese medicine clinics. One of the most common cases of night sweats is yin deficiency fire, which is often accompanied by five heartburn, sweating of the hands and feet, redness of the cheekbones, and a red tongue with few tires, which are manifestations of yin deficiency fire. The other kind is the deficiency of qi and yin, which is characterized by fatigue and weakness, dry mouth and eyes, lumbago and low back pain, and lack of energy. In terms of Western medicine, night sweats are commonly associated with tuberculosis, hyperthyroidism, tumors, chronic diseases and rheumatic immune diseases. So in general, we need to check the causes of night sweats from these aspects to see what causes night sweats, so as to treat the symptoms.