A　new　simulation　and　modeling　method　for　permanent　magnet　(PM)　contactor　is　proposed.　The　equivalent　magnetic　circuit　model　of　PM　contactor　is　established　through　magnetic　field　partition　scheme,　and　the　effect　of　PM　is　equivalent　to　coil　current　on　the　premise　that　the　force　on　the　moving　core　remains　unchanged　before　and　after　the　equivalent.　The　equivalent　current　at　different　air　gaps　is　solved　and　fitted　as　a　function　of　moving　core　displacement,　and　acts　on　the　coil　together　with　external　excitation　to　achieve　the　purpose　of　substituting　the　equivalent　current　for　the　PM.　On　this　basis,　a　co-simulation　model　of　PM　contactor　integrated　with　control　and　body　was　established.　Using　the　current　closed-loop　control　technology　to　verify　the　effectiveness　of　the　co-simulation　model,　which　provides　a　new　idea　for　the　design　of　PM　contactor　intelligent　control　strategy.　©　2021　IEEE.