Clinically, according to the clinical manifestations, the standard of chronic kidney disease stage I is glomerular filtration rate ≥90ml/min, at this time the blood creatinine level is generally normal, the reference value for men is 53~106μmol/L; the reference value for women is 44~97μmol/L, the standard value is different in different hospitals, and you can test the reference value according to the local hospital. The treatment of chronic kidney disease stage I mainly focuses on symptomatic treatment, controlling high blood pressure and eliminating proteinuria through medication. At the same time, adjusting lifestyle and diet structure, avoiding infections and taking drugs that can damage the kidneys, to maximize the slowing down of the process of chronic kidney disease. Blood creatinine level is a sensitive and efficient indicator of renal function, but it is easily affected by body weight, gender and age, etc. Clinical staging of chronic kidney disease is mainly based on glomerular filtration rate. It is recommended that patients with chronic kidney disease should go to regular hospitals in time and have standardized diagnosis and treatment under the guidance of professional doctors.