Uric acid below 180 μmol/L is usually not particularly harmful, but too low a uric acid is harmful, it is generally not recommended to lower uric acid below 200 μmol/L. Humans have evolved to adapt to the environment by gradually inactivating the enzyme uricase to ensure that the body maintains uric acid at a certain level. Uric acid in the body can play a role in maintaining blood pressure, improve intelligence, antioxidant and so on. Normal adult male blood uric acid is 150μmol/L~416μmol/L, normal female blood uric acid is 89~357μmol/L. Although uric acid lower than 180μmol/L is still within the normal range for both men and women, too low a level of uric acid may lead to kidney damage, neurological damage and other hazards. If the uric acid value is higher or lower than normal, it is recommended to go to the hospital to clarify the cause and follow the doctor’s instructions to standardize the treatment.