The baby’s lips got a small transparent blister (blister), should be treated according to the etiology, if it is hand, foot and mouth disease, can be symptomatic treatment; if it is contact dermatitis, you can use antihistamines, as well as glucocorticoid drugs. 1. Hand, foot and mouth disease: mainly due to viral infections, can cause the baby’s lips with a small transparent blisters, you can observe the baby’s general condition, fever and pain can be oral acetaminophen and other drugs symptomatic treatment. 2. contact dermatitis: lips in contact with allergenic substances or irritating substances, can also lead to the baby lips with a transparent blisters with itching, you can take cetirizine oral solution for anti-allergy treatment, topical hydrocortisone ointment, dinexed ointment and other glucocorticoid medication. The baby’s lips had a transparent blisters, there may be other reasons, it is recommended to go to the hospital in a timely manner to check, clarify the cause of the disease, follow the doctor’s instructions for treatment.