Antiviral drugs for hepatitis C previously had interferon plus ribavirin, and small molecule direct antiviral drugs have been invented with better efficacy. These drugs can be divided into the following categories according to their target sites: 1. NS3/4A protease inhibitor drugs are elbasvir, gekarevir, asorevir, and fosiravir; 2. NS5A inhibitors are velpatasvir, lidipavir sofosbuvir, daltegravir hydrochloride Daclatasvir, gekarevir peruntavir, etc.; 3, NS5b polymerase inhibitors are sofosbuvir, dasabuvir sodium tablets; 4, CYP3A4 inhibitors are oseltamivir phosphate, ritonavir, etc. Clinically, it is also necessary to choose different drugs according to the genotyping of hepatitis C, whether there is a combination of cirrhosis, and whether it is a primary patient or a treated patient.