For　stepping　motor　control　system　characteristics　of　high　nonlinear,　time-varying　and　strong　coupling,　this　paper　proposes　the　stepping　motor　closed-loop　control　system　based　on　active　disturbance　rejection　control　technology.　It　uses　ADRC　technology　to　design　the　controller　and　combines　with　stepping　motor　mathematical　model　Leenhouts　to　build　the　nonlinear　system.　By　setting　appropriate　ADRC　parameters　to　make　position　response　simulation　experiments,　the　conclusion　of　this　paper　can　be　obtained.　The　simulation　experiments　results　show　that　the　stepping　motor　closed-loop　control　system　based　on　ADRC　has　the　advantages　of　shorter　transition　time,　better　control　precision　and　stronger　ability　to　resist　disturbance　than　PID　control.　©　2016　TCCT.