Blisters are blisters, and there are many reasons why there are many small blisters on the feet, such as fungal infection and eczema. 1. Fungal infections: fungal infections of the feet can cause tinea pedis, which can cause a lot of small blisters on the feet, which occur between the fingers (toes), palms, metatarsals and lateral margins of the feet, and also accompanied by obvious itching phenomenon. 2. Eczema: Eczema is a chronic skin disease, can be related to a variety of factors, such as mental factors, allergic factors, infectious factors, etc., can cause a lot of small blisters on the feet phenomenon. There are a lot of reasons why there are a lot of small blisters on the feet, and it is recommended to go to the dermatology department of the hospital in a timely manner after the symptoms appear, to give standardized treatment after a clear diagnosis, and not to ignore the symptoms and take them lightly.