在对二相混合式步进电动机磁系统进行分析的基础上，提出用二条典型磁极支路的特性作为代表确定整个磁系统磁状态的方法，包括本相电流和邻相电流对该磁极支路的作用，不妨把这二条磁极支路的特性称为混合式电动机的磁化特性，可以作为对电动机进行非线性分析的重要基础。“,”Based on the analysis of the magnetic system of 2-phase hybrid stepping motor system,the paper proposes to take the 2 typical magnetic pole branches as the represent and the method of determining the magnetic status,which taking consideration of both self-phase current and adjacent phase current.Then we can take the magnetization characteristic of these two branches as the magnetization characteristic of the hybrid stepping motor,which may be the important basis for non-linear analysis of the motor.