Thrombospondin 2(THBS2)is a matrix cell calcium-binding glycoprotein that interacts with a variety of growth factors,receptors,matrix molecules or proteases on the extracellular matrix and cell surface.THBS2 can be activated by N6-methyladenosyl RNA methylase,and mediates tumor proliferation,migration and invasion by re-modeling the tumor microenvironment and participating in multiple cell signaling pathways.THBS2 could be used as a diagnostic and prognostic indicator for a variety of tumors,and is expected to become a new target for malignant tumor treatment.