Generally speaking, the precautions for thyroid ultrasonography mainly include two aspects, such as preparation before imaging and observation during imaging. Pre-imaging preparation: fasting or a small amount of food, before completing the routine ultrasound of the thyroid gland, as well as the examination of thyroid function and thyroid-related antibodies, asking for a detailed history of allergies, asking for serious respiratory diseases, and strictly eliminating contraindications. Observation during imaging: during the examination, try not to swallow and do not speak, which will affect the display of thyroid blood flow; if a thyroid nodule with a high degree of malignancy is found, surgical resection is recommended for treatment. Finally, it should be noted that if symptoms such as dyspnea, headache, nausea, etc. occur during thyroid imaging, the imaging should be stopped in time, and the necessary measures should be taken in time with the physician.