The child’s face is red but not hot, which may be due to physiological reasons, eczema, allergies, thin skin and other reasons. 1. Physiological reasons: for example, the face is congested and red after entering the room after being stimulated by cold, but the child’s body temperature is normal. 2. Eczema: Repeated stimulation of the face may cause facial eczema, which appears as reddish skin color and may be accompanied by itching discomfort. 3. Allergy: the child’s face contact with special objects, or inhalation of pollen, etc., may cause symptoms of systemic allergies, also appear red, localized or even the appearance of air masses, rashes. 4. Thin skin: the child’s skin is thin, subcutaneous capillaries through the skin will also appear red. In addition, children who live in the plateau for a long time, the hemoglobin content in the blood is high, will also appear red face. There may be other reasons for the child’s red face but not fever. After eliminating physiological factors, it is recommended to take the child to the hospital for examination to rule out the cause of the disease.