Androgenic alopecia(AGA)is a kind of common pathological hair loss in Dermatology,which is more common in men.Its etiology and mechanism are not completely clear,and AGA needs to be diagnosed and treated early.There are no typical clinical manifestations of AGA in the early stage,and it is difficult to make a definite diagnosis by subjective examination.The purpose of this paper is to briefly discuss the laboratory indicators of AGA patients,hoping to better serve clinical diagnosis and treatment.