Post-dialysis creatinine around 700 μmol/L, in most cases, indicates that the goal of adequate dialysis has not been achieved, and the need to increase the number of dialysis or prolong the duration of dialysis, but a small number of young patients post-dialysis creatinine will also be maintained at around 700 μmol/L, in addition to peritoneal dialysis patients creatinine will not usually be a clear reduction. 1. Most patients will have a clear decrease in post-dialysis creatinine level after adequate dialysis, and most of them will maintain it around 300-400μmol/L. If the post-dialysis creatinine is around 700μmol/L, it means that the dialysis is not effective, and it is necessary to increase the number of dialysis sessions or prolong the duration of dialysis in order to discharge the accumulated creatinine and other metabolic toxins of the body from the body, and to alleviate the toxic effects on the body. 2. A small number of young patients have creatinine values as high as 1,000 μmol/L or even higher before dialysis, and the creatinine will remain at about 700 μmol/L even after adequate dialysis. In addition, patients on peritoneal dialysis generally do not have a clear decrease in creatinine. If the creatinine remains high after dialysis, it is recommended that the patient go to the hospital, improve the examination under the guidance of the doctor, clarify the adequacy of dialysis, and reformulate the dialysis treatment plan as prescribed by the doctor if necessary.