There are various types of tinea pedis, and the type of ointment for blistered feet depends on the degree of blistering and whether it is broken or eroded. Blister type foot fungus is caused by the infection of Trichophyton mentagrophytes. At the beginning of the disease, the blisters are scattered or clustered pinpoint-sized deep blisters with thick walls that are tense and shiny and do not break easily. The blisters may dry up after a few days, with collar-like flaking, and the lesions may continue to spread to the surrounding area, forming well-defined scaly spots with significant itching. Creams or aqueous agents with little irritation should be chosen for treatment, such as ketoconazole cream, miconazole nitrate cream, clotrimazole cream, etc. Wet compresses such as boric acid solution and ezacridine should be given, and powders such as zinc oxide powder and miconazole powder should be given when there is little exudation, and topical creams and ointments should not be used after the skin is dry, and drugs with high irritation and exfoliation should not be chosen. In addition, if the treatment is not effective, joint application of antibiotics should be given when tinea pedis secondary to bacterial infection, while local wet compresses with potassium permanganate solution or Levanoxyl can be used; when ringworm rash is triggered, anti-allergy treatment should be given along with active treatment of the primary lesion. Systematic medication can be administered as prescribed by the doctor, with oral itraconazole or terbinafine, with attention to regular review of liver function during the medication period. Pay attention to personal hygiene in daily life, do not share shoes and socks, bath tubs and footbaths with others. Wear breathable and comfortable shoes and socks, and keep the feet dry, which can effectively avoid the growth of fungi and bacteria.