Based　on　the　different　body　configurations　caused　by　varying　head-to-tail　distances　exhibited　by　crawling　inchworms　during　locomotion,　this　paper　proposes　a　crawling-inchworm-type　self-tuned　dynamic　vibration　absorber　(DVA)　based　on　silicone　gel　materials　for　reducing　low-frequency　vibration.　The　proposed　DVA　was　designed　and　developed　by　employing　a　magnetic　hanging　design　with　movable　features,　a　span　adjustment　design　with　an　embedded　stepper　motor,　and　a　real-time　control　design　using　a　microcontroller.　First,　a　finite　element　simulation　model　was　established　to　analyze　the　main　structure　of　the　self-tuned　DVA　using　the　finite　element　method.　The　frequency-shifting　characteristics　of　the　absorber　were　obtained　by　identifying　the　actuating　modes　that　are　sensitive　to　the　hanging　span.　Second,　based　on　the　frequency-shifting　characteristics　of　the　self-tuned　DVA,　an　absorber　control　system　was　designed　by　introducing　a　short-time　Fourier　transform　and　PID　algorithm　to　achieve　autonomous　frequency　adjustment　of　the　DVA.　Finally,　the　self-tuned　absorption　effects　of　the　prototype　self-tuned　DVA　were　tested　through　a　series　of　experiments,　which　confirmed　its　excellent　self-tuned　vibration　absorption　capability　within　the　low-frequency　range.