The disadvantages of thyroid nodule ablation include: firstly, it may lead to incomplete coverage of the lesion, and secondly, it is difficult to obtain specimens, which limits the tumor typing and characterization, as follows: 1. May lead to incomplete coverage of lesions: the energy range of thyroid nodule ablation is spherical, but irregular shape of thyroid nodules is common, so there is usually residual tissue after ablation, which may lead to incomplete coverage of lesions. 2. Affecting the characterization and typing of nodules: Thyroid nodule ablation is to eliminate nodules by means of high temperature, so it is difficult to obtain nodule specimens, thus affecting the characterization of tumor typing. If the tumor is malignant, it may spread and metastasize due to incomplete coverage of the lesion. Therefore, the disadvantages of thyroid nodule ablation mainly include the above two aspects. Whether or not it meets the indications of nodule ablation should be assessed by the doctor, and should not be neglected in order not to make a mistake.