The consequences of thyroid without surgery will be analyzed according to the different conditions of the patient. First, if it is a smaller cystic lesion and nodule in the thyroid gland, there is no obvious blood flow signal around the lesion, suggesting that the nodule will not change significantly in a short period of time, this condition can indeed be treated without surgery and the size of the lesion can be closely observed, which will not cause serious effects on the human body. If the thyroid lesion is accompanied by calcification, blood flow signal, unclear boundary and aspect ratio greater than 1, malignant tumor is highly considered. If the patient does not have timely surgical removal, it is possible that the tumor cells, along with lymphatic vessels and blood vessels, may cause cancerous invasion of the surrounding lymph nodes and further increase the volume of the lesion, which may lead to distant metastasis of the organism and endanger the life of the patient. Third, if there is a huge lump in the thyroid gland without surgical treatment, the lump will compress the trachea and esophagus of human body, which will seriously affect normal breathing and eating and will affect the life of patients.