Hepatocellular carcinoma is not contagious when couples live together, but the primary causes of liver cancer, such as hepatitis, are contagious, so it is necessary to clarify the causes of liver cancer to avoid the transmission of the primary causes. Some liver cancers are developed from infectious hepatitis, such as hepatitis B, hepatitis C, etc., which can be easily transmitted to the other half in the process of cohabitation, and the common ways of transmission are blood transmission, mother-to-child transmission, sexual transmission, medical transmission, etc. Therefore, liver cancer patients need to clarify the primary cause of liver cancer. Therefore, liver cancer patients need to clarify the primary cause of liver cancer, and if it is caused by hepatitis, they need to pay attention to protection in daily life. Both husband and wife with liver cancer need to have regular physical examination, check liver function and liver ultrasound, etc. for early detection and early treatment, and carry out active treatment under doctor’s guidance, and do not use medication privately so as not to cause danger.