Vinegar infusion formula is one of the treatments for ringworm of the hands, but it is best to use it in combination with other herbs. The commonly used proposed formula is as follows, which can be composed of the Chinese herbal medicines Kulan 15g, Soap Alum 15g, Catechu 10g, Phellodendron 10g, Ground Bone Bark 20g, Doujianpi 10g, Scutellaria 15g, Gong Dingxiang 3g, Blood Dried 2g, and vinegar 1000ml. First, soak the herbs into 500ml of vinegar, and then filter them through double-layer gauze after 1 week of soaking, and then put the dregs into 500ml of vinegar after filtering, and then filter them through double-layer gauze after 1 week, and the liquid obtained from 2 times can be soaked. Soak the affected part twice a day, 15-20 minutes each time, 7 days for a course of treatment, generally 1-2 courses of treatment will have better results.