If you feel hot at night, there are usually several factors: from the perspective of Chinese medicine, this symptom belongs to the fire evidence, usually the upper jiao fire, such as lung fire and heart fire, and the result of kidney deficiency and spleen deficiency, will appear at night when sleeping with the clinical symptoms of hot body. From the perspective of Western medicine, the most common factors are infectious factors, such as infection by bacteria, viruses, fungi, and other atypical pathogens and pathogenic microorganisms, which can lead to hot body at night, accompanied by low fever and hypothermia. It is also associated with endocrine and metabolic diseases, such as hyperthyroidism and hyperadrenocorticism, which may cause clinical symptoms and manifestations of hot body at night. In some non-infectious diseases, such as connective tissue diseases, immune diseases and metabolic diseases, such as rheumatic diseases, rheumatoid diseases, dermatomyositis and systemic lupus erythematosus, clinical symptoms and manifestations of body burning may also occur at night.