All thyroid nodules may have the potential to become cancerous. Most patients have very stable thyroid nodules and basically do not need treatment. The percentage of nodules that become cancerous is very low, and only a few patients may become cancerous. However, abnormal signs can be detected in advance during regular follow-up examinations, and after early surgical treatment, the survival time of patients is basically unaffected. The main benign thyroid nodules are: inflammatory nodules, thyroid cysts, and nodular goiter. Inflammatory nodules will slowly subside and stabilize as the inflammation slowly subsides and with antibiotic treatment. A thyroid cyst is a cystic change of the thyroid gland, which is a benign lesion and is basically not cancerous. As for nodular goiter, some patients may have malignant changes, so we must pay attention to daily review, mainly for the size, shape, internal structure, and the degree of close adhesion with the surrounding tissues, if the nodule is considered to have malignant changes, early intervention, biopsy can further clarify the diagnosis, clear malignant cases, timely surgery can ensure the maximum survival time of patients. In conclusion, for thyroid nodules, it is important to review them carefully to try to detect signs of cancer before they become cancerous and to treat them with early surgery.