Abstract: In recent years, cardio-oncology has become a new field to identify, prevent and treat the cardiovascular complications caused by tumor itself or tumor treatment. With the increase in the number of patients, it has gradually attracted people's attention. Nuclear medical imaging plays an important role in the research of cardio-oncology, which can help to early and accurately diagnose and monitor the cardiotoxicity caused by tumor treatment, and effectively improve the prognosis of tumor patients. Based on this, the author reviewed the research progress of nuclear medicine imaging in cardio-oncology.