OBJECTIVE： To establish the quality standard for Mian medicine Indigofera stachyoides. METHODS： Medicinal properties and microscopic characteristics were identified； TLC was used for the qualitative identification； HPLC was conducted for content determination of epicatechin and 2α，3α-epoxy-5，7，3′ ，4′ -tetra-hydroxy-flavan-（4β→8）-epicatechin（reference A）： the column was Comatex TM C18 with mobile phase of acetonitrile - water at a flow rate of 1.0 ml/min， and detection wavelength was 210 nm， column temperature was 30 ℃， injection volume was 5 μl. RESULTS： It showed clear microscopic identification map. I. stachyoides TLC had clear spots and well separated. The linear range was 0.274 5-4.392 0 μg （r＝0.999 6） for epicatechin，and 0.103 0-1.648 3 μg for reference A （r＝0.999 4）， RSDs of precision， stability and reproducibility tests were lower than 3％，recoveries were 99.76％-104.82％ （RSD＝2.42％，n＝6） and 97.98％-104.99％（RSD＝2.75％，n＝6） respectively. CONCLUSIONS： The established standard can be used for the quality control of I. stachyoides.