Children with red lips may be related to dehydration, allergies, fever and so on. 1. Lack of water: If the child drinks less water, the lack of water will be dry, stimulate the local tissues, the phenomenon of red lips will occur. 2. Allergy: If the child belongs to the allergic body, accidental contact with allergic substances, may cause allergy, causing red lips, may also be accompanied by swelling, itching symptoms. 3. Fever: children with fever can also have symptoms of red lips, fever metabolism speed up, blood vessels will also be dilated, which produces red lips, may also be accompanied by facial redness. Children with red lips may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor’s treatment.