Abstract: Abstract: Radiotherapy is one of the main treatments for malignant tumors, and is widely used today, such as breast cancer, esophageal cancer, lung cancer, mediastinal tumors, and Hodgkin's disease. Patients undergoing radiotherapy are susceptible heart damage of prolonged periods of X-ray irradiation for a long time, causing varying degrees of radiological heart disease (RIHD). RIHD may involve any structure of heart, so cardiac complications become life-threatening diseases in cancer survivors. The effective clinical management and prevention are still quite challenging. This article reviews the manifestation, pathogenesis, monitoring of cardiac related indexes and progressin prevention and treatment of cardiac injury in patients after radiotherapy.

Key words: radiotherapy, heart injuries, radiation injuries, radiological heart disease