The cause of female bladder outlet obstruction can be divided into functional and anatomical obstruction.The diagnosis of male bladder outlet obstruction has had the gold standard. If the female bladder outlet obstruction were diagnosed by the diagnostic criteria for male bladder outlet obstruction,its incidence seems relative lower than in males.In recent years,Scholars made their endeavor for diagnostic criteria for female bladder outlet obstruction.This paper described the research progress in diagnosis of female bladder outlet obstruction.