Normal urine albumin creatinine ratio is less than 30mg/g, usually the higher the ratio, the more serious the relative. Greater than 300mg/g for clinical proteinuria, if not treated, the disease may progress forward, even if more serious. Urine albumin creatinine ratio is mostly used to assess renal injury and clarify whether there is a pathologic state. It is widely used in the early screening of renal disease, efficacy assessment, and guidance of drug application. Therefore, generally speaking, the higher the urine albumin creatinine ratio is, the more serious the renal impairment is, and the condition is also relatively serious. Elevated urine albumin creatinine ratio is mostly related to kidney diseases, common ones include nephrotic syndrome, chronic glomerulonephritis, diabetic nephropathy, rheumatoid nephritis and so on. In addition, some tumors or trauma may also lead to changes in the ratio. Patients with high urine albumin/creatinine ratio are advised to go to regular hospitals in time, improve the examination to clarify the cause of the disease, and then give targeted treatment under the guidance of the doctor.