Thyroid Cancer is one of the most common malignant carcinomas. The incidence of thyroid cancer has risen in the past years. The recrudesce rate is highly raised. Computer is widely used by people nowadays, is it a predisposing factor to the highly raised recrudesce rate? This research observed two random assigned groups, in which the patients were diagnosed by pathologic results. One group were strictly prohibit with using computer, the other were not told. Finally collect the recrudesce rate of each group, analyze the data by statistic software.