The aim of this paper is to do re-extraction of active ingredients in alc. sediment of Salvia miltiorrhiza.The ethanol which was 3 times the dregs of alc. sediment of Salvia miltiorrhiza was used to extract dregs, and the content in extract was determinedThe extract had high salvianolic acid B.The alc. sediment of Salvia miltiorrhiza had more active ingredients, which could be utilized economically.