[Objective]This study aimed to investigate the culture conditions for hairy roots of Aconitum coreanum(Levl.)Raipaics and optimize the amplification culture conditions in bioreactors,thus providing basis for large-scale production of A.coreanum hairy roots.[Method]The effects of different p H,culture modes and culture vessels on the growth of hairy roots were compared to obtain the optimal culture conditions for A.coreanum hairy roots.Moreover,the effects of medium volume and inoculation mode on bioreactor culture of A.coreanum hairy roots were investigated to analyze the feasibility of amplification culture of hairy roots in bioreactors.[Result]After autoclaving,medium p H was reduced slightly and the clarity of medium varied.To be specific,A.coreanum hairy roots cultured in medium at p H 5.80 exhibited the best growth.A.coreanum hairy roots cultured in liquid medium displayed more rapid growth than hairy roots cultured in solid medium.Medium p H and electrical conductivity(EC)varied with the extension of culture time.The yield and propagation coefficient of A.coreanum hairy roots were positively correlated with the size of culture vessels.The growth of hairy roots cultured in bioreactors were influenced by medium volumes and inoculation modes.[Conclusion]The growth of A.coreanum hairy roots were significantly influenced by medium p H,culture modes and culture vessels.A.coreanum hairy roots cultured in bioreactors exhibited high yield and large propagation coefficient.According to the results,the relationship between ventilation volume and hairy root density is crucial to the amplification culture of A.coreanum hairy roots. [Objective] This study aimed to investigate the culture conditions for hairy roots of Aconitum coreanum (Levl.) Raipaics and optimize the amplification culture conditions in bioreactors, thus providing for large-scale production of A. coreanum hairy roots. [Method] The effects of different p H, culture modes and culture vessels on the growth of hairy roots were compared to obtain the optimal culture conditions for A. coreanum hairy roots.Moreover, the effects of medium volume and inoculation mode on bioreactor culture of A. coreanum hairy roots were investigated to analyze the feasibility of amplification culture of hairy roots in bioreactors. [Result] After autoclaving, medium p H was reduced slightly and the clarity of medium varied. To be specific, A.coreanum hairy roots cultured in medium at p H 5.80 exhibited the best growth. A. coreanum hairy roots cultured in liquid medium displayed more rapid growth than hairy roots cultured in solid medium. Medium p H and electrical conductivity (EC) varied with the extension of culture time. Yield and propagation coefficient of A.coreanum hairy roots were positively correlated with the size of culture vessels.The growth of hairy roots cultured in bioreactors were influenced by medium volumes and inoculation modes. [Conclusion] The growth of A.coreanum hairy roots were significantly influenced by medium pH, culture modes and culture vessels. A..coreanum hairy roots cultured in bioreactors exhibited high yield and large propagation coefficient. According to the results, the relationship between ventilation volume and hairy root density is crucial to the amplification culture of A.coreanum hairy roots.