Pelvic floor dysfunction may Include pelvic organ prolapse (POP) and incontinence. Their symptoms can be classified into micturition, defecation, prolapse, sex and pain. Causes and risk factors of POP are likely to be multifactorial, varying from patient to patient, such as pregnancy, vaginal childbirth, increasing body mass index, ageing, congenital pelvic floor defects, lifestyle (high-Impact activities) and chronic disease. Currently, there are three grading systems most commonly used worldwide. In this article, we add a new classification system that was proposed by the International Urogynecology Association in 2006 to the summarized table for comparison. Hopefully, this work can update our readers of the new knowledge and help primary care provider and researchers to facilitate effective communication.