The causes of smelly feet in children include excessive secretion of sweat glands in the feet, impermeable shoes and athlete’s foot, etc. The symptoms of smelly feet can be improved by cleaning the feet, replacing the shoes with permeable ones and taking medication. 1. Excessive secretion of sweat glands in the feet: the sweat glands in some children’s feet will secrete more sweat, which can easily lead to bacterial growth and cause smelly feet, you can clean the children’s feet to reduce bacterial growth to alleviate the symptoms of smelly feet. 2. Shoes are not breathable: children wear shoes that are not breathable enough, the gas in the shoes and the sweat in the feet can not be fully evaporated, thus causing the feet to have a sweaty odor, you can give the child to replace the breathable shoes, change clean shoes and socks diligently to alleviate the symptoms of smelly feet. 3. Tinea pedis: due to fungal infection caused by tinea pedis resulting in smelly feet, can be under the guidance of the doctor to use miconazole and other topical antifungal drugs to improve the symptoms of smelly feet. If your child’s smelly feet are more serious, there may be other reasons, such as changing shoes and socks, cleaning the feet and still not relieved, you should go to the hospital for active treatment. The above medications need to be used regularly under the guidance of a doctor.