The baby paste red rash may be allergic, should be removed in a timely manner, if necessary, you can use anti-allergy drugs to relieve. If a baby has a red rash when applying ointment, it is generally an allergy to the ointment, and the ointment should be removed in time, and you can use warm water to rinse and remove the residual substances on the skin. If the rash is mild, it will be relieved on its own and return to normal. If the rash is obvious and itchy at the same time, you can use anti-allergy drugs, such as loratadine to relieve. You can also use anti-itching agents, such as glycerine lotion. There may be other reasons for the rash on the baby plaster, it is recommended to go to the hospital in time for examination and treatment, the use of the above drugs should follow the doctor’s instructions.