Blisters are usually referred to as blisters in medicine, and blisters on the feet may be caused by ringworm of the feet, sweat herpes and other diseases. 1. Tinea pedis: mainly due to the superficial skin fungal infection of the feet caused by pathogenic bacteria such as red trichophyton and trichophyton vulgare. Patients will have symptoms such as foot peeling, blisters and itching. 2. Sweat herpes: related to allergies, infections, mental factors, etc. It occurs in palmoplantar and lateral margins of fingers (toes). The lesions are deep pinpoint to corn size blisters, often accompanied by intense itching. There are many reasons that lead to blisters on the feet, and it is recommended that patients go to the hospital to clarify the cause of the disease.