Numbness in the hands and feet after thyroid cancer surgery usually recovers after 2 to 3 weeks after surgery. Numbness of hands and feet after thyroid cancer surgery is often caused by damage to parathyroid glands during thyroid surgery. Symptoms usually start to appear 1~3 days after surgery. For mild symptoms, no treatment is needed and close observation is sufficient. Those with more severe symptoms need calcium supplements and surgery if necessary. After the symptoms of numbness in the hands and feet appear, you should limit the intake of meat, dairy, eggs, oral calcium gluconate or calcium lactate, etc. Regularly test the blood calcium and adjust the dosage of calcium supplements. If the symptoms are more serious, the patient can take vitamin D. If the effect of drug treatment is not good, the parathyroid function is permanently hypothyroid, and the patient needs to be treated with surgery and transplantation of parathyroid glands, which is rare in the clinic. Normal body has 4 parathyroid glands, usually after 2~3 weeks, the uninjured parathyroid glands can play a compensatory role, and the symptoms can disappear on their own. If the parathyroid glands may be damaged during surgery, a parathyroid transplant can be done at the same time. If the symptoms do not improve, you should actively seek medical attention to avoid aggravation of the condition and adverse consequences.