Hepatitis C virus is an RNA virus that is transmitted mainly through blood, sexual contact and mother-to-child routes, and is a highly chronic hepatitis virus, as follows: 1. Blood transmission: Drug use, needle sharing and blood transfusions can cause blood transmission, which is the main route of transmission of hepatitis C. 2. Sexual contact transmission: Sexual intercourse between husband and wife can also cause transmission of hepatitis C. 3. Mother-to-child transmission: Mothers with hepatitis C who The RNA value is high, can cause mother-to-child transmission, so that the baby infected with hepatitis C. So to prevent the transmission of hepatitis C, pay attention to the three transmission routes, the current clinical application of DAA class small molecule drugs for the treatment of hepatitis C, to achieve very good results, can make hepatitis C patients completely cured, so the incidence of hepatitis C is declining trend year by year.