Thyroid cancer is a common malignant tumor in clinical practice. The incidence of thyroid cancer is increasing year by year, especially for women, and it is the first of all female neck tumors. The incidence of thyroid cancer varies according to different living habits and environments, but the incidence rate of thyroid cancer in the population is about 0.5‱ in a large sample survey. This figure does not necessarily represent the incidence of thyroid cancer in the whole population, but the incidence rate is not particularly low. Most thyroid cancer is detected by ultrasound during physical examination, but few patients can detect thyroid cancer by themselves. Therefore, thyroid cancer must be diagnosed and treated early, and the life expectancy and prognosis of thyroid cancer will not be affected after active treatment.