The so-called differentiated thyroid cancers include two types: papillary and follicular thyroid cancers. Their treatment methods consist of the following: First, surgical treatment is a primary treatment strategy for early-stage differentiated thyroid cancers, involving radical surgical removal. After surgery, some patients need to take medications to supplement thyroid hormones. Secondly, for patients with advanced differentiated thyroid cancers, the main comprehensive treatment measures include radiotherapy and chemotherapy. Additionally, postoperative early-stage patients can also undergo treatment with Iodine-131 to monitor changes in the condition and provide internal radiation treatment to control the progression of the disease. Internal radiation treatment can be performed multiple times.