DC vaccine refers to dendritic cell vaccine, which usually starts from inducing and enhancing the strong immune properties of DC cells to reactivate the body’s immune response, treat the damaged immune system, and improve the body’s ability to fight against viruses. DC cells, also known as dendritic cells, are named after the many dendritic or pseudopod-like projections that protrude when mature, and they can be the most powerful antigen-presenting cells known to the human body, mainly involved in the body’s immune response, so they can be used for vaccine research. the main mechanism of action of DC vaccines includes a super-inducing effect, which induces maturation of immature subcutaneous dendritic cells and enhances their antigenic presentation. presentation of antigens. It may also have a role in the activation of specific cells, particularly T lymphocytes, which may facilitate the initiation of virus clearance by non-hemolytic cells. It may also have the efficacy of initiating immune response, with specific instructions to T lymphocytes to reactivate immune recognition of the virus and break the immune system’s immune tolerance to the virus. Moreover, DC vaccine can promote the repair of the immune system, improve the body’s immune function, as well as resistance to the virus, inhibit the replication of the virus, promote the production of antibodies, and also achieve the efficacy of seroconversion. Generally speaking, after the DC vaccine is injected, it is still necessary to pay attention to good living habits, avoid spicy and stimulating food, and do not eat easily sensitized food, stay away from allergic substances, and should also pay attention to rest, do not drink alcohol, drink plenty of water, and do not exercise strenuously.