The fingerprints of Panax Notoginseng medicinal material,intermediate product and injection were detected and 75% ethanol was confirmed as the most suitable extracting solution. Notoginsenoside R 1 and ginsenoside R g1, R f, Rb 1, R d, R e etc. were indentified by LC/MS technigue. The fingerprints of medicinal material, intermediate product and injection were compared with each other.