The purpose of this study was investigation of quantitative analysis of marker substances in solid fermented Angelicae Gigantis Radix by High performance liquid chromatography(HPLC). HPLC was performed for determination of nodakenin and decursin in solid fermented Angelicae Gigantis Radix extract, the separation method was performed on C18 column ($250;mm;{ imes};4.6;mm$, $5;{mu}m$, RS tech) using gradient solvent mixtures of water-acetonitrile with photodiode array detector (330 nm). The flow rate was 1.0 ml/min. Retention time of nodakenin and decursin was about 11.47, 46.79 min and linearity of calibration was showed good result(r2=0.9999, 0.9999), respectively. Content of nodakenin was $0.76;{pm};0.02%$ in control, $0.31;{pm};0.00%$ in Angelicae Gigantis Radix extract fermented with Paecilomyces japonica(SDT)(p<0.01), $0.51;{pm};0.02%$ in Angelicae Gigantis Radix extract fermented with Ganoderma lucidum(SYT)(p<0.01), $0.82;{pm};0.03%$ in Angelicae Gigantis Radix extract fermented with honey(SST)(p<0.05) and $0.88;{pm};0.01%$ in Angelicae Gigantis Radix extract fermented with Nuruk(SNT)(p<0.01). Content of decursin was $4.50;{pm};0.08%$ in control, $2.90;{pm};0.05%$ in Angelicae Gigantis Radix extract fermented with Paecilomyces japonica(SDT)(p<0.01), $2.65;{pm};0.08%$ in Angelicae Gigantis Radix extract fermented with Ganoderma lucidum(SYT)(p<0.01), $4.46;{pm};0.11%$ in Angelicae Gigantis Radix extract fermented with honey(SST) and $4.73;{pm};0.04%$ in Angelicae Gigantis Radix extract fermented with Nuruk(SNT)(p<0.05), respectively.