This　letter　presents　a　method　for　electromagnetic　time-reversal　(TR)　object　reconstruction.　Specifically,　we　place　objects　under　test　inside　a　metallic　enclosure,　apply　a　TR　method,　and　leverage　the　equivalent　source　principle　to　reconstruct　objects.　The　preliminary　results　verify　the　efficacy　of　the　proposed　method,　demonstrating　its　ability　to　solve　inverse　problems　without　resorting　to　intricate　mathematical　formulations　or　Green’s　function.　Thus,　it　offers　a　practical　and　efficient　alternative　solution　for　applications,　such　as　noninvasive　detection,　sensing,　and　medical　imaging.　©　2023　IEEE.