Foot fungus is a common superficial fungal infection, mostly seen in adults, often aggravated in summer and alleviated in winter. According to its clinical characteristics, it can be divided into three types: 1. Blister type: deep blisters often appear repeatedly on the tip of the toe, toes and their lateral edges, sparsely distributed or occurring in groups, with thick walls, not easy to rupture, accompanied by obvious itching, after a few days the blisters dry up, desquamation, itching then relieved. 2. Erosion type: common in the 4th-5th toe or between 3-4th toes, the cuticle impregnated with white, peeling off to reveal a bright red vesicular surface, at this time the exudate increased, smelly, itchy, easy to secondary infection. 3. 3, scaly keratosis type: common in the heel, toes and their lateral edges, can be manifested as a thickening of the stratum corneum, rough, dry and cracked, such as bark-like, the lesions expand over time, chaps and cracks in winter, pain, and can be accompanied by itching.