Immunotherapy,a burgeoning field differs from traditional cancer treatments,is revolutionizing oncologic therapeutics.It aims to stimulate the innate and adaptive immune system of a patient to fight against tumor cells.However,low response rate and immune-related adverse effects (irAEs) remain problems during its management.A novel technology using nanomaterials may bring a solution.Various nanoparticles have been investigated as delivery systems to augment cancer therapeutic efficacy in the lab and clinic.In this review,we briefly summarize the connotation of immunotherapy,the application of nanotechnology in cancer,especially focusing on the synergistic effect of nanoplatform-based technology combined with cancer immunotherapy,hoping to make readers a deep insight into this interdisciplinary field.