OBJECTIVE To compare the contents of naringin in gusuibu from different places. METHODS Narin-gin of Rhizoma Drynariae was determined by HPLC. RESULTS Naringin showed a good linear relationship at 157~ 1 256 ng (r=0. 9999). The naringin content of gusuibu from different districts varied, so did that in different conditions of the same district. CONCLUSIONS Genuine crude d...