The recovery time of malignant thyroid tumor is mainly related to the type of its tumor and surgical method, most of them can recover in one month or so, some of them can recover in three months or so, and even the ones with high malignant degree can not be cured, which are explained as follows. 1. Recovery in one month or so: if it is papillary or follicular thyroid cancer, its malignant degree is low, if it is actively operated to remove the lesion at the early stage of development, it will not affect the survival period, and most of them can be recovered in one month or so; if the disease develops to the middle stage, if it is operated to remove the lesion and treated with iodine 131 after the operation, the cure rate will be higher, and the patient can be recovered in early stage when he has a strong resistance to the disease himself. 2. Recovery in three months or so: if medullary thyroid cancer, the prognosis is poor, and it needs to carry out lymph node sweeping in many regions of the neck, the surgery is more traumatic, and postoperative iodine 131 treatment is necessary; if the patient combines with basic diseases, infections and complications, the recovery time is relatively long, and it takes three months or even longer. 3. Uncurable: undifferentiated thyroid cancer develops rapidly and is highly malignant, and about half of the population has lymph node metastasis at early stage, and often metastasizes to distant places through blood transport, so the prognosis is very poor, with an average survival time of 3-6 months, and the survival rate of one year is only 5%-15%, which is difficult to be cured at this time. Even if you have malignant thyroid tumor, you should still build up confidence, actively follow the doctor’s instructions for treatment, improve your life habits, and have regular checkups to prolong the survival period.