Incidence of thyroid cancer has continuously increased in the last three decades globally. A similar trend of thyroid cancer incidence appeared in China. New cases and deaths of thyroid cancer in China accounted for 15.6% and 13.8% of the global new cases and deaths in 2012. The incidence in East China was the highest while that in Middle China was the lowest. Thyroid cancer was more common in urban areas than in rural counterparts. The incidence was substantially higher in female patients than male. Thyroid cancer occurred most commonly in middle age. Radiation exposure

iodine sufficiency or deficiency

sex hormone and genetic mutations were risk factors for thyroid cancer. To prevent it

potassium iodide should be taken to prevent radiation fallout in nuclear accidents

unnecessary exposure to radiation from medical imaging is reduced

iodine surveillance system is improved and appropriate standards for iodized salt are established.