An abnormal blood uric acid of 670µmol/L is elevated blood uric acid, which can be clinically associated with gouty arthritis and renal lesions. Hyperuricemia is currently diagnosed with a fasting blood uric acid level >420µmol/L on two occasions not on the same day on a daily diet. A blood uric acid level of 670µmol/L may present with clinical manifestations such as gouty arthritis and renal lesions. 1. Gouty arthritis: common in young and middle-aged men. It usually starts in the first metatarsophalangeal joint. The onset of the disease is rapid and peaks within 24 hours. Chronic high uric acid levels increase the risk of gouty arthritis. 2. Kidney disease: This includes gouty nephropathy and uric acid kidney stones. Gouty nephropathy has an insidious onset, only proteinuria in the early stage, and renal insufficiency can occur in the late stage. Some gout patients may have uric acid stones, often asymptomatic, larger stones can occur renal colic and hematuria. Patients with high blood uric acid are advised to go to the rheumatology and immunology departments of regular hospitals for detailed consultation and treatment according to the doctor’s instructions.