Thickening of the baby’s lips may be caused by other reasons such as glandular lipitis, adenoid hypertrophy, granulomatous lipitis, and chronic lipitis. 1. Adenoidal lipitis: the etiology of adenoidal lipitis is not clear, and is considered to be related to gingivitis, periodontitis, syphilis and other factors. Patients will appear lip swelling and thickening, lip red edge with pinhead size purple spots, abscesses and other manifestations. Therefore, babies with adenoidal lipitis will show thickening of the lips. 2. Adenoid hypertrophy: adenoid hypertrophy is caused by recurrent episodes of acute and chronic nasopharyngitis, the patient will appear lip thickness, dental irregularities, jawbone lengthening and other adenoid facial features, as well as nasal congestion, obstructive sleep apnea, paroxysmal cough and other symptoms. If the lesion appears adenoid hypertrophy, it will be manifested as thickened lips. 3. Granulomatous Lipitis: The cause of granulomatous lipitis is still unclear, it may be caused by food allergy, dental material allergy, or microbial infection. Patients will have diffuse swelling of the lips and other manifestations. If the baby has granulomatous labiitis, there will be symptoms of thickening of the lips. 4. Other: baby lip thickening may also be caused by chronic lipitis, insect bite dermatitis and so on. It is recommended that babies with thickened lips need to bring their babies to the doctor in a timely manner, the doctor will address the cause of the treatment.