Objective: to optimize the cutting technology of Aucklandiae Radix. Method: The cutting technology of Aucklandiae Radix was optimized by L₉ (3⁴) orthogonal design taking the content of costunolide and dehydrocostuslactone, the intestinal propulsion in mice as indexes with the amount of water, soaking time and thickness of pieces as factors. Result: The best cutting technology of Aucklandiae Radix was cutting 1-2 mm thin pieces after soaking 10 h with 0.3 times water. Conclusion: The optimum cutting technology of Aucklandiae Radix is reasonable and feasible; it can provide a reference for establishing the quality standard of Aucklandiae Radix pieces.