Normal blood uric acid level is 150~416 μmol/L for men and 89~357 μmol/L for women. 504 μmol/L of blood uric acid is not normal, and higher than the normal range, it is elevated blood uric acid. The normal reference range for blood uric acid is 150~416 μmol/L for men and 89-357 μmol/L for women, and a fasting blood uric acid level of >420 μmol/L on two occasions not on the same day with a daily diet is considered hyperuricemia. Thus blood uric acid 504 μmol/L is an elevated uric acid level. Uric acid exceeds a certain saturation level in the blood or tissues and tends to be widely deposited in the tissues inside and outside the joints. Acute attacks of gout occur when uric acid crystals trigger an immune response that leads to a localized inflammatory reaction. Some patients with hyperuricemia do not trigger gouty attacks, which may affect renal and vascular function and increase the risk of chronic disease. Therefore, patients with blood uric acid 504μmol/L need to avoid purine-rich foods such as animal offal, seafood, and bean sprouts, and need uric acid-lowering treatment if they are combined with chronic diseases such as hypertension and diabetes. It is recommended that patients with blood uric acid 504μmol/L go to the hospital in time for diagnosis, and then follow the doctor’s instructions for active treatment to avoid delaying their condition.