Objective: To study the correlation analysis between the HPLC fingerprints of Astragali Radix extracts and the antifatigue effects.
Methods: Three types of extracts of Astragali Radix were obtained and arranged by uniform design for HPLC fingerprint analysis and the antifatigue effect experiment. The correlation analysis between the HPLC fingerprints of Astragali Radix extracts and the antifatigue effects were carried out with orthogonal signal correction-partial least squares (OSC- PLS) method.