Children with blisters on their hands may be caused by fungal infections, eczema and hand, foot and mouth disease, etc. You can improve the microscopic examination of mycelium, allergen examination, hand, foot and mouth related virology examination. 1. Fungal infection: also known as ringworm, can lead to blisters on children’s hands. It is mainly microscopic examination of mycelium, because it is a unique phenomenon of fungal infection, but the examination needs to be carried out early, and there is a certain rate of leakage. 2. Eczema: Eczema is mostly related to allergies and can be triggered by allergens. Therefore, checking allergens is very important for the treatment, and it is recommended to have allergens checked by a doctor. 3. Hand, foot and mouth disease (HFMD): HFMD is a multi-system disease of children caused by a group of enteroviruses and characterized by rashes on the hands, feet, mouth and other parts of the body. Hand, foot and mouth related virology tests can be done to clarify the diagnosis. Children with blisters on their hands, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.