Alopecia is a kind of disease that affects patients' quality of life.Hair loss in women,with female pattern hair loss as the main reason,is increasingly attracting attention.Female pattern hair loss,also called female androgenic alopecia,can be classified according to the traditional Ludwig and Olsen classification,or the recently developed BASP classification.Getting to know the definition and clinical patterns of female pattern hair loss will be helpful to its therapy.Besides traditional therapy such as topical minoxidil,some new approaches have been introduced to the treatment of female pattern hair loss,including topical adenosine,phototherapy,hair transplantation,etc.