Objective:To optimize the extract process of total phenolic acids from lonicerae japonicae flos.Methods:The best extraction conditions were obtained by ultraviolet spectrophotometry and HPLC methods based on the test of total phenolic acids from lonicerae japonicae flos. An orthogonal experiment was conducted by using the total phenolic acids,chlorogenic acid and isochlorogenic acid A as evaluation indices,meanwhile ethanol concentration,extraction time,solvent dosage and extraction times were used as influ...