The normal range for blood uric acid in young people is generally 150-416 μmol/L for men and 89-357 μmol/L for women, with small variations depending on the test method or reagent. Uric acid is the end product of purine metabolism in the human body and is mainly excreted through the kidneys and intestines. Elevated blood uric acid is mainly associated with an abnormal increase in uric acid production or a decrease in uric acid excretion. It may be related to inborn purine metabolism disorder, high purine diet, acute and chronic renal insufficiency, some drugs and so on. Blood uric acid is lower than the normal level of diet-related, such as long-term vegetarian diet can be insufficient purine intake, or long-term bedridden, nasal nutrition or intravenous nutrition of patients, but also due to long-term use of certain drugs. When the blood uric acid value is obviously abnormal, it is recommended to go to the hospital in time to find out the cause, and follow the doctor’s instructions to standardize the treatment.