Viral load and cd4 generally refer to the viral load and CD4 of the HIV virus in a person with AIDS, both are equally important and represent different meanings. Viral load refers to the amount of HIV (Human Immunodeficiency Virus) in a person’s body, and is an important indicator of the infectiousness and effectiveness of treatment for those who have already been diagnosed with the infection, and needs to be tested regularly in the course of treatment, to provide a reference for the use of medication, etc. CD4 is a type of immune cell in the immune system, which is used in the treatment of AIDS. CD4 is a kind of immune cells in the immune system, mainly used in the diagnosis of AIDS and evaluation of immune function, the more serious the degree of infection, the lower the CD4 index, down to a certain amount, will show symptoms of disease.CD4 value can be used as one of the indicators of the evaluation of the effectiveness of antiretroviral therapy. Therefore, there is no saying who is more important, they are both equally important to the infected person and have some correlation with each other, both should follow the doctor’s instructions for regular review of the test.