tsh high t3t4 normal suggests subclinical hypothyroidism, you can take thyroid hormone treatment according to the condition, if TSH <10mIU/L, and no symptoms, you can observe. 1. TSH <10mIU/L and accompanied by dyslipidemia, atherosclerosis, easy to fatigue, fear of cold, weight gain, memory loss and other symptoms of patients need to take thyroid hormone treatment, not accompanied by the above conditions generally do not need to take drugs, regular review can be. 2. Severe subclinical hypothyroidism (TSH>10mIU/L) is recommended to be treated with thyroid hormone regardless of symptoms and dyslipidemia. It is recommended that patients with high tsh and normal t3t4 should consult a doctor in time to improve the relevant examinations under the guidance of the doctor and formulate a reasonable treatment plan.