Abstract: In recent years, with more and more basic research on the POU family, it has been found that POU domain proteins are related to cell development, replication, growth, and cell cycle blocking and differentiation. POU3F2 not only participates in embryonic development and differentiation of central neuroendocrine system, but also has wide expression in malignant tumors, and regulates the proliferation, invasion and metastasis of tumor cells in different ways to affect tumor development. Based on the structure of POU3F2, the review expounds the function and research status of POU3F2 in common malignant tumors, with the hope of further studying its mechanism and preventing diseases.