Although the radioactive substance from Japan's Fukushima Nuclear Station has only a limited impact on China,the psychological impact must not be overlooked. With a reasonable understanding of the possibility of an accident in a nuclear power generating unit,prudent decisions should be made in selecting the type of nuclear reactor,the monitoring of environmental radioactivity should be enhanced and coordinated,preventive measures should be taken against the harm of radioactive iodine to thyroid gland,and public education should be promoted to enhance people's knowledge of nuclear power utilization and protection against ionizing radiation.