Abstract: Objective: To determine the prevalence and risk factors of androgenetic alopecia (AGA) in Langfang district, Hebei province．Methods: The cluster sampling survey was carried out to collect prevalence data of androgenetic alopecia (AGA) in Langfang. Results: There were 3596 people (1891 male and 1705 female) were surveyed, of?which??418?cases?(327 male and 91 female) were diagnosed as AGA. The?total?prevalence rate?of AGA was 11.6%. The prevalence of AGA in male?was 17.3% and 5.3% in female.?The prevalence of heavy alcoholic drinkers was 28.1%, which was higher than that of occasional drinkers (12.7%) and nondrinkers (10%). The prevalence in the people who?sleep?less than?8?hours per day was 13.5%, which was higher than that in the people who sleep?less than?8?hours per day. The prevalence?of AGA was increasing as the increase of body mass?index of the people. Conclusion: The prevalence of AGA in male was higher than that in female. Drinking, sleeping insufficiency and high BMI were the risk factors for AGA .

Key words: androgenetic alopecia, epidemiological survey