Hepatitis B and AIDS are very different, the pathogens of infection are different. Hepatitis B is an infectious disease caused by infection with the hepatitis B virus. Clinical manifestations are symptoms of the digestive tract, such as poor appetite, fatigue, abdominal distention, aversion to oil, nausea, vomiting and other manifestations. AIDS, on the other hand, is caused by human immunodeficiency virus infection, which mainly invades the body’s immune system and can lead to a decrease in immune cells, thus causing various opportunistic infections and tumors. The incubation period of AIDS is very long, around 6-8 years, during which time the patient does not have any discomfort symptoms, and only when he/she enters the AIDS stage will some clinical manifestations appear.