After a thyroid nodule puncture, if the wound is not red, swollen, pus-flowing, painful and other discomforts you can usually take a shower in about three days. Thyroid nodule puncture biopsy is a method to determine the nature of thyroid nodules, usually under ultrasound guidance with a puncture needle to take a little bit of thyroid nodule tissue to do the pathology, to clarify the nature of the thyroid nodule, which can help us to determine the benignity or malignancy of the nodule, in order to prepare for further treatment. Generally, the puncture needle is very thin, the wound is very small, and the bleeding can be stopped after a few moments of bandaging and pressure. After the puncture, we should be careful not to rinse the wound with water for three days. After the wound has healed and there is no redness, swelling, pus, pain or other discomforts, you can take a shower. Thyroid nodule puncture should be carried out under the guidance of a doctor and precautions should be asked of the attending doctor.