Acute kidney injury can be reversed in the early stage, especially the post renal and anterior renal injury; however, chronic kidney injury is difficult to be reversed even in the early stage, but it can be partially improved after active treatment. 1. Post-renal injury: Post-renal injury is often seen in some urinary tract obstruction or tumor-induced obstruction, after the obstruction is lifted, the kidney injury can be fully recovered. 2. Pre-renal injury: pre-renal injury is mainly due to dehydration, blood loss caused by renal insufficiency, acute kidney injury, active treatment of the primary disease, generally can be cured. 3. If chronic renal impairment occurs, it is often difficult to completely reverse, clinically, we need to monitor the glomerular filtration rate, 24-hour urine protein quantification, etc., and appropriate use of drugs to improve microcirculation may have a certain degree of reversal, but it is difficult to completely cure. If you find that your kidneys are impaired, we recommend that you consult the nephrology department of a regular hospital and receive standardized treatment under the guidance of a physician.