You can usually eat and drink before thyroid puncture, but do not overeat. Thyroid puncture with a fine needle is now a safer and easier clinical procedure, with a lower likelihood of complications such as hematoma and bleeding. It is generally not necessary to keep an empty stomach before doing it, so you can eat and drink before the thyroid puncture. Thyroid function tests are routinely performed prior to the puncture to further assess whether there is a combination of thyroid function abnormalities. If the patient is taking anticoagulant drugs such as warfarin and aspirin, the doctor should assess the coagulation function and choose the right time for the puncture to minimize the risk of bleeding. It should also be noted that before the puncture should avoid staying up late, reduce anxiety and tension, and maintain a light diet. Patients who need to undergo thyroid puncture should actively cooperate with the doctor’s procedure.