A large red hard bumps on the baby’s body, should be treated according to the cause of the disease, allergic factors, you can use topical glucocorticoid ointment, oral antihistamines; bacterial infections should choose antibiotic treatment. 1. Allergic factors: such as hives, insect bite dermatitis and other allergic factors, can lead to a large red bumps on the baby. Glucocorticoid drugs such as glycerine lotion and dexamethasone ointment can be used externally to relieve the symptoms, and antihistamines such as cetirizine and loratadine can also be used. 2. bacterial infection: bacterial infection caused by skin folliculitis, soft tissue infections, can also lead to a large red bumps on the baby’s body, you can use erythromycin ointment, mupirocin ointment and other antibiotic drugs treatment. A large red bumps on the body of the baby, there may be other reasons, need to take the child to the hospital for examination, follow the doctor’s instructions for treatment.