Toe erosion is often caused by local fungal infections or a single diet, which can be treated by keeping the area dry and applying antifungal medications such as ketoconazole, etc. You can also wash your feet with a diluted solution of warm potassium permanganate, usually 1:5000 for dilution. In the diet, the appropriate intake of vitamin and fiber-rich foods, such as fruits and green vegetables, etc., while not eating too spicy food, such as chili peppers, spicy strips, spicy hot pot, etc.; can not drink alcoholic beverages; appropriate intake of fruit rich in B vitamins and C vitamins, such as kiwi, apples, bananas, duck pears, etc.; also need to eat some coarse foods, such as brown rice, corn, etc. These foods will have glutathione etc. within them, which will help the local recovery. But if the erosion is very serious, you need to go to the dermatology department of the hospital for treatment in time.