叙述了利用磁通法建立亥姆霍兹线圈测量系统的测量原理 ,并将其应用于永磁体磁性能参数 (Br,Hc,易磁化轴方向等 )的测量 .在利用现有高性能积分器的基础上 ,还给出了测量程序的设计方法 ,并利用此测量系统对BEPC永久四极磁铁模型所用磁块进行了测量 .最后 ,就由于亥姆霍兹线圈机械偏差所带来的测量误差进行了讨论 The measuring principle of Helmholtz coil measuring system established by flux method is described and applied to the measurement of magnetic parameters (Br, Hc, direction of easy magnetization axis, etc.) of permanent magnet.Using the existing high performance integrator , The design method of the measurement program is given and the magnetic block used in the BEPC permanent quadrupole magnet model is measured by using this measuring system.Finally, the measurement error caused by the mechanical deviation of the Helmholtz coil Discussed