This article reviews the activity of the immunomodulatory plants of sambiloto (Andrographis paniculata Nees.) which is used as an alternative therapy in improving the body's immune system. Sambiloto (Andrographis paniculata Nees.) is an Indonesian plant that is widely studied today, especially the immunomodulatory activity it has. Immunomodulatory activity of the sambiloto is due to the active compound content of deoxyandrographolide, andrographolide, 14-deoxy-11, neoandrographolide, 12-didehydroandrographolide, homoandrographolide, diterpenoid and flavonoid contained in sambiloto. As an immunomodulator, sambiloto can be used as immunostimulatory agent that boost the immune response when the immunity is reduced, and can also be an immunosuppressor i.e., lowering immune response when the immune system increases beyond normal body conditions. In addition, as an immunomodulator, sambiloto is able to normalize the body condition despite the presence of infection.