Thyroid nodule 4a is graded under thyroid ultrasound, thyroid nodule 4a puncture biopsy benign does not necessarily need to be treated, small volume of asymptomatic nodules, generally do not need to be treated; if the nodules are large in size and have clinical symptoms, they need to be treated. Thyroid nodules are lesions caused by abnormal proliferation of thyroid cells. Usually, thyroid nodule 4a puncture biopsy benign does not necessarily require treatment. For patients who have no clinical symptoms and the size of benign thyroid nodules is small, treatment is usually not required, only regular review and monitoring. However, patients with large benign nodules and clinical symptoms such as dyspnea and dysphagia require treatment and should cooperate with their doctors to adopt surgical treatments such as microwave ablation, lumpectomy and lobectomy. In conclusion, patients with thyroid nodule 4a need to actively cooperate with doctors for treatment.