You can’t get liver cancer from taking entecavir. It can be understood from the two aspects of the causes of liver cancer and the effects of entecavir: 1. Reasons for the occurrence of liver cancer: there are many reasons for the occurrence of liver cancer, one of which is the persistence and over-replication of chronic hepatitis B virus, which leads to the occurrence of cirrhosis of hepatitis B, which is poorly controlled and finally leads to liver cancer. This indicates that hepatitis B virus infection may lead to the development of liver cancer. 2. The function of entecavir: entecavir is a kind of antiviral drug, mainly used to treat chronic hepatitis B virus infection, which can control the virus replication, but can not completely eliminate the virus, the purpose is to try to control the progress of the disease, and slow down the development of hepatitis B to cirrhosis and liver cancer. Taking entecavir will not get liver cancer, but drugs have adverse reactions and should be used under the guidance of a doctor.