Thyroid stimulating hormone reference value 0.35-5.50uIU/ml (specific value suggests referring to the local hospital), thyroid stimulating hormone 6.31uIU/ml belongs to the mild elevation, usually not very serious, also need to be combined with the T3, T4 judgment. Thyroid stimulating hormone can promote the proliferation of thyroid follicular epithelial cells and the synthesis and release of thyroid hormones, and the level of thyroid stimulating hormone can reflect the function of the thyroid gland. Thyrotropin 6.31uIU/ml is mildly elevated. When T3 and T4 are normal, it suggests subclinical hypothyroidism, which is usually not very serious, and the patient may be asymptomatic, and may develop hypothyroidism at a later stage, with manifestations such as chills, fatigue, slow heart rate, and constipation, etc. Thyroid hormone replacement therapy can be carried out to maintain the normal function of the thyroid gland. Elevated thyroid stimulating hormone should be treated under doctor’s supervision.