Objective To build a method for direct measuring total amylase and pancreatic amylase. Methods We have used 2 Chloro 4 nitrophenyl 4 0 D galactopyranosylmaltoside (Gal G 2 α CNP) as the substrate and wheat germ ptyalin inhibitor for determination of T AMY and P AMY. Amylase converted Gal G 2 α CNP into β D galactopyranosylmaltose and 2 chloro 4 nitrophenol, which was measured at 405nm. Results The method is no need for auxiliary enzymes, the lag phase of this test was < 60 s...