[Objective] The research aimed to investigate the effects of ultra high pressure water jet on the liposoluble tanshinone ⅡA of Salviae miltiorrhizae.[Method] The extraction of Salviae miltiorrhizae was treated by varying pressure from 150-350 MPa,components and contents were identified and determined by TLC method and HPLC method.[Result] There was no obvious difference in the number, size and Rf value of spots on TLC chromatograms,and basically the same in the number and shape of peaks on HPLC chromatogram...