The invention relates to a method for furthering separating and purifying salvianolic acid from Danshen extract fluid, which comprises that prepares, breaks and extracts Danshen via water solution, acidifies extract to adjust pH and adds salt to process post-treatment, processes dynamic continuous adsorption and elution on the treated extract at chromatography column stuffed with resin adsorbent, elutes via water, collects and concentrates eluent, elutes via gradient ethanol solution, segmented collects and concentrates eluent, and dries the concentrates solution to obtain product. The invention can simply, effectively and quickly separate and purify various salvianolic acids, wherein test on different salvianolic acid products shows that the highest yields of tanshinol, alkannic acid, rosmarinic acid, salvianolic acid A and salvianolic acid B are 35. 55%, 70.65%, 99.27%, 82.78%, and 89.34%, and relative highest purities are 95.32%, 65.05%, 29.40%, 33.93%, and 82.35%, which are near or higher than the result of purification on the goal of single component.