Hyperthyroidism is a common clinical condition with complex etiology. The recommended consultation process is as follows: Step 1: Determine if the patient is hyperthyroid Based on the medical history, clinical manifestations, and then check the thyroid function FT3, FT4 elevation can be diagnosed as hyperthyroidism. Step 2: Define the cause of hyperthyroidism Hyperthyroidism can be initially divided into: thyroid hyperthyroidism (including 8 causes), pituitary hyperthyroidism, hyperthyroidism with tumor, ovarian goiter with hyperthyroidism, medical hyperthyroidism and temporary hyperthyroidism, the most common of which is diffuse goiter with hyperthyroidism (also known as Graves’ disease). TSH, TRAb, TPOAb, TGAb, iodine uptake rate and ultrasound of the thyroid gland are useful for differential diagnosis, and fine needle aspiration cytopathology of the thyroid gland is feasible if necessary. Step 3: Evaluation of complications of hyperthyroidism Screening for hyperthyroid eye disease, hyperthyroid liver disease, hyperthyroid hematological changes, hyperthyroid heart disease, hyperthyroid myopathy, endocrine changes of hyperthyroidism, hyperthyroid psychosis, hyperthyroid skin changes, etc. Finally, an individualized treatment plan will be developed based on the test results.