Pediatric pneumonia fever at night may be caused by decreased heat dissipation from the skin, autonomic nerve disorders, and decreased drug concentration. Pediatric pneumonia fever at night may be caused by a decrease in heat dissipation from the skin. Capillaries in the skin will constrict, blood flow will decrease, and without sweating, the temperature of the skin will decrease slightly, and a fever will occur. Pediatric pneumonia fever at night may be caused by autonomic nervous disorders, due to autonomic dysregulation in the body, there may be tightening of the skin, palms, feet, fever and other symptoms. Pediatric pneumonia fever at night may be due to the longer night time, so the concentration of drugs will be reduced, and the lungs will be detoxified at night, sputum will increase, resulting in poor quality of sleep and reduced resistance. Pediatric pneumonia fever at night, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.