A　self-starting　control　strategy　with　quasi-critical　current　for　intelligent　contactor　is　proposed.　The　forced　down　phenomenon　of　coil　current　was　analyzed　and　the　constraint　condition　for　current　closed-loop　was　inferred.　Then,　the　universal　feedback　signal　of　movement　of　contacts　was　established.　Thus　the　quasi-critical　starting　current　was　obtained　when　turning　point　occurred.　By　fuzzy　observation,　the　starting　current　for　contactor　of　different　capacity　was　provided　for　the　first　time.　A　digital　closed-loop　control　method　with　opposite　polarity　voltage　was　designed.　The　high　response　online　current　search　was　used　to　approach　critical　starting　current　under　the　current　working　condition,　in　order　to　realize　self-starting　process　control　with　coordination　between　attraction　and　counter-force.　The　proposed　control　strategy　which　is　insensitive　of　contactor　parameters　change　and　voltage　fluctuation,　can　adaptively　search　for　the　quasi-critical　current　to　suppress　the　contact　bounce.　And　it　has　advantages　of　starting　block　fault　alarm,　coil　overcurrent　protection　and　so　on.　The　effectiveness　of　the　control　strategy　is　verified　by　related　simulations　and　experiments.　©　2019,　Harbin　University　of　Science　and　Technology　Publication.　All　right　reserved.