This paper introduced the change of flavonoids in Pueraria lobata plant beverage during pilot production.The results showed that the content of total flavonoids in wild Pueraria lobata beverage production is on the rise during the extraction process,and could reached max for 0.26mg/ml in 2h.But in the subsequent production process including enzymatic hydrolysis,enzyme inactivation,blending,homogenizing,sterilizing process,the content of total flavonoids changed slightly and overall trend stationary,the final total flavones concentration was 0.21mg/ml.And its sensory index,physicochemical and microbial index could reach the national standard.