Summer feet on the appearance of transparent blisters (medically known as blisters) is very itchy may be sweat herpes, tinea pedis, acute eczema and other causes. 1. Sweat herpes: often occurs in summer, common on the soles of the feet, fingers and other parts of the performance of small blisters the size of a grain of rice, often accompanied by excessive sweating, peeling and other symptoms, there can be varying degrees of itching, burning and other symptoms. 2. Tinea pedis: superficial skin fungal infection of the feet caused by dermatophytes, easily occurring in summer or high temperature, manifested as deep small blisters, blisters clarified, can be fused into large blisters, clear boundaries, accompanied by obvious itching, due to repeated scratching, may appear erosion, oozing. 3. Acute eczema: due to a variety of internal and external factors combined, good in summer and winter, foot acute eczema can be manifested as erythema on the basis of pinhead to corn size papules, papules, small blisters, often fused into a piece, itching is intense, often due to repeated scratching leading to the formation of unclear boundary of the vesicles. Summer feet on the transparent small blisters very itchy may also be due to other factors, it is recommended that the patient timely medical treatment, and actively carry out the relevant examination, in order to clarify the cause of the symptomatic treatment.