Objective:To establish a method for Salvianolic acid B for Salvia miltiorrhiza Bge.Methods:The Phenomenex C18 analytical column(4.60mm×250mm,5μm)was used.The mobile phases comsisted of Formic acid,H2 O,Methanol and Aacetonitrile(1∶59∶30∶10)with isocratic elution.The flow rate was 1mL/min,the detection wavelength was at 286 nm and the column temperature was at 25℃.Results:The method had good linear relationship within the range 0.0396~0.792mg/mL of Salvianolic acid B,with the correlation coefficent higher as...