OBJECTIVE: To determine the content of 17 amino acid in sarcocarp of northeast Empetrum nigrum simultaneously. METHODS: HPLC-ELSD method was adopted. The determination was performed on Waters Symmetry C18 column with mobile phase consisted of 5.0 mmol/L heptafluorobutyric acid solution (containing 0.7% trifluoroacetic acid)-acetonitrile (gradient elution) at the flow rate of 2.0 L/min, the column temperature was 37 ℃, the drift tube temperature was set at 60 ℃. RESULTS: The line- ar ranges of glycine, serine, aminosuccinic acid, aminopropionic acid, threonine, glutamic acid, cystinol, diaminocaproic acid, histidine, arginine, proline, valine, methionine, oxyphenylaminopropionic acid, isoleucine, aminocaproic acid, phenylalanine were 0.005 9-0.187 7, 0.008 2-0.262 8, 0.010 4-0.332 8, 0.007 0-0.222 7, 0.009 3-0.297 8, 0.011 5-0.367 8, 0.009 4-0.300 4, 0.011 4- 0.365 5,0.012 1-0.388 0,0.013 6-0.435 5,0.009 0-0.287 8,0.009 2-0.293 0,0.011 7-0.373 0,0.014 2-0.453 0,0.010 3-0.328 0, 0.010 3-0.328 0 and 0.012 9-0.413 0 mg/mL (all r>0.999 0). RSDs of precision, stability and repeatability tests were not all less than 2.0%. Recoveries were 98.0%-101.2%(RSD<2.0%,n=6). CONCLUSIONS: This method is simple, precision, stable and repeatable, and can be used for simultaneous determination of 17 amino acid in sarcocarp of northeast E. nigrum.