Once the skin peels off on the hands in the summer, you can consider exfoliative keratolysis, herpes sweats, and tinea cruris. Specific conditions can be judged according to the performance. 1. Exfoliative Keratolysis: due to heredity, medication, sweaty hands and other reasons, summer sweating, there will be peeling skin on the hands. 2. Sweat rash: also known as poor sweating type eczema, sweating in summer can easily lead to peeling and itchy hands. 3. Ringworm: caused by fungal infections, severe sweating in summer and hot weather, fungi are easy to breed, often manifested as blisters, flaking, itching and other symptoms. There are many reasons for the peeling of the hands in summer, and it is recommended to go to a professional dermatology hospital for treatment to avoid other complications.