Thyroid stimulating hormone (TSH) of 6.7 µIU/ml is generally considered high, and the reference value range may vary from hospital to hospital. It is not possible to determine the severity of the disease based on this result alone, and it is necessary to combine it with other indicators such as thyroid hormones and thyroid autoantibodies for a comprehensive evaluation. The reference range of serum thyroid stimulating hormone (TSH) is generally 0.35-5.5 µIU/mL, which may vary from hospital to hospital, and 6.7 µIU/ml is generally considered high. High TSH can be seen in pituitary tumor, thyroid deficiency, hypothyroidism stage of Hashimoto’s thyroiditis and other pathological conditions, which are generally more serious; it can also be seen in medication, simple iodine deficiency and other conditions, which are usually not serious. It is not possible to determine the severity of the condition on the basis of one test result alone, and it is recommended that thyroid hormone and thyroid autoantibody tests be performed for a comprehensive evaluation. Patients with elevated thyroid stimulating hormone are advised to go to the hospital in time for examination to clarify the specific cause of the disease and under the guidance of the doctor for treatment.