Abstract: In this article multiple radiation accidents were reporte,among them four cases caused overexposure, one case of degree I local acute radiation skin injury, another case of degree IV. Through analysis of the causes of these radiological accidents and medical observations of the patients, we can further understand the radiation hazards caused by different accidents, summarize the medical diagnosis and treatment experience of radiological injuries. It is suggested that radiation protection management for key occupational groups should be strengthened to prevent the occurrence of radiological accidents.

Key words: radiation accident, overexposure, radiation skin injury, diagnosis and treatment, medical observation