The peritoneal equilibration test is primarily used to assess peritoneal function,guide the prescription of peritoneal dialysis,and determine the prognosis of peritoneal dialysis patients.This article overviews the peritoneal equilibration testing methods,peritoneal transport function classification,peritoneal membrane dysfunction,and their clinical significance.It also examines the factors that may influence the results of the peritoneal equilibration test and the precautions to be taken when applying it in clinical practice.