Abstract: Interventional radiology is a new technique in medical diagnosis and therapy. Based on the new computer technique and bioengineering material, it has been gotten much progress. Though the patients can get a lot of benefits from this technique, Scientists have noticed that the latency radiation risk of the patients. In some interventional radiological procedures, skln or lens injuries of the patients may be induced in non-optimized interventional radiology. Therefor, the scientists of radiation protection put their attention on the problem of the patient protection in the world.