Surgical injection therapy for corns is a treatment that involves injecting medication into the root of the corns to cause the corns to become necrotic and fall off. Cornsurgical injection therapy usually uses anhydrous ethanol, ipecac injection, etc., to inject drugs into the root of the corns to cause local tissue necrosis, and after necrosis, the corns will darken and fall off. It is a simple and safe way to treat corns. The main side effect of drug injection therapy is that it is easy to cause local swelling and pain. There is usually a strong pain when injecting, when injecting the drug can be injected into the liquid with a little lidocaine to reduce the pain. Some patients will have localized itching, redness and other allergic symptoms after injection, and most of them can recover on their own. Surgical injection therapy for corns is not suitable for pregnant women and breastfeeding women. Injections are not recommended for localized skin infections or allergic reactions.