The hazards and disadvantages of ablation have the potential to cause damage to the surrounding normal cells, blood vessels and nerves. 1. Damage to surrounding normal cells: ablation mainly kills tumor cells through high temperature, in the process, it may damage the surrounding normal cells, for example, when liver ablation, it may destroy normal liver cells. 2. Vascular damage: Similarly, ablation may also cause damage to the normal blood vessels around the tumor, thus causing dysfunction of blood supply to the normal tissues around the tumor. 3. Nerve damage: ablation may also cause nerve damage, thus causing functional changes in the body, such as after thyroid ablation, if the recurrent laryngeal nerve is damaged, hoarseness will occur. If there is any discomfort after the operation, it is recommended to go to the hospital for treatment in time.